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Finding the Fourth Proportional to 387,897.71, 535,372.56 and 242,770.91

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Solution

The fourth proportional to 387,897.71, 535,372.56 and 242,770.91 is: 335,070.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,897.71 : 535,372.56 = 242,770.91 : x
  2. Step 2: Convert to fraction form
    387,897.71/535,372.56 = 242,770.91/x
  3. Step 3: Cross multiply
    387,897.71x = 535,372.56 × 242,770.91
  4. Step 4: Simplify right side
    387,897.71x = 129,972,884,918.66
  5. Step 5: Solve for x
    x = 129,972,884,918.66/387,897.71
  6. Step 6: Final answer
    x = 335,070.00

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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.