Home / 387,240,189.90-534,375,912.90-211,024,429.50

Finding the Fourth Proportional to 387,240,189.90, 534,375,912.90 and 211,024,429.50

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Solution

The fourth proportional to 387,240,189.90, 534,375,912.90 and 211,024,429.50 is: 291,205,239.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,240,189.90 : 534,375,912.90 = 211,024,429.50 : x
  2. Step 2: Convert to fraction form
    387,240,189.90/534,375,912.90 = 211,024,429.50/x
  3. Step 3: Cross multiply
    387,240,189.90x = 534,375,912.90 × 211,024,429.50
  4. Step 4: Simplify right side
    387,240,189.90x = 112,766,372,158,264,192
  5. Step 5: Solve for x
    x = 112,766,372,158,264,192/387,240,189.90
  6. Step 6: Final answer
    x = 291,205,239.28

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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.