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Finding the Fourth Proportional to 439,908.64, 607,057.68 and 238,700.32

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Solution

The fourth proportional to 439,908.64, 607,057.68 and 238,700.32 is: 329,397.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,908.64 : 607,057.68 = 238,700.32 : x
  2. Step 2: Convert to fraction form
    439,908.64/607,057.68 = 238,700.32/x
  3. Step 3: Cross multiply
    439,908.64x = 607,057.68 × 238,700.32
  4. Step 4: Simplify right side
    439,908.64x = 144,904,862,474.46
  5. Step 5: Solve for x
    x = 144,904,862,474.46/439,908.64
  6. Step 6: Final answer
    x = 329,397.63

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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.