Home / 387,172,833,929.33-534,300,171,912.63-211,193,134,891.78

Finding the Fourth Proportional to 387,172,833,929.33, 534,300,171,912.63 and 211,193,134,891.78

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Solution

The fourth proportional to 387,172,833,929.33, 534,300,171,912.63 and 211,193,134,891.78 is: 291,447,432,233.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,172,833,929.33 : 534,300,171,912.63 = 211,193,134,891.78 : x
  2. Step 2: Convert to fraction form
    387,172,833,929.33/534,300,171,912.63 = 211,193,134,891.78/x
  3. Step 3: Cross multiply
    387,172,833,929.33x = 534,300,171,912.63 × 211,193,134,891.78
  4. Step 4: Simplify right side
    387,172,833,929.33x = 112,840,528,279,445,310,537,728
  5. Step 5: Solve for x
    x = 112,840,528,279,445,310,537,728/387,172,833,929.33
  6. Step 6: Final answer
    x = 291,447,432,233.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.