Home / 261,083,653.47-391,490,709.84-76,827,184.11

Finding the Fourth Proportional to 261,083,653.47, 391,490,709.84 and 76,827,184.11

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Solution

The fourth proportional to 261,083,653.47, 391,490,709.84 and 76,827,184.11 is: 115,201,118.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,083,653.47 : 391,490,709.84 = 76,827,184.11 : x
  2. Step 2: Convert to fraction form
    261,083,653.47/391,490,709.84 = 76,827,184.11/x
  3. Step 3: Cross multiply
    261,083,653.47x = 391,490,709.84 × 76,827,184.11
  4. Step 4: Simplify right side
    261,083,653.47x = 30,077,128,842,232,268
  5. Step 5: Solve for x
    x = 30,077,128,842,232,268/261,083,653.47
  6. Step 6: Final answer
    x = 115,201,118.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.