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Finding the Fourth Proportional to 387,753.06, 535,094 and 217,987.14

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Solution

The fourth proportional to 387,753.06, 535,094 and 217,987.14 is: 300,819.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,753.06 : 535,094 = 217,987.14 : x
  2. Step 2: Convert to fraction form
    387,753.06/535,094 = 217,987.14/x
  3. Step 3: Cross multiply
    387,753.06x = 535,094 × 217,987.14
  4. Step 4: Simplify right side
    387,753.06x = 116,643,610,691.16
  5. Step 5: Solve for x
    x = 116,643,610,691.16/387,753.06
  6. Step 6: Final answer
    x = 300,819.32

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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.