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Finding the Fourth Proportional to 439,898.40, 607,060.80 and 238,694.40

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Solution

The fourth proportional to 439,898.40, 607,060.80 and 238,694.40 is: 329,398.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,898.40 : 607,060.80 = 238,694.40 : x
  2. Step 2: Convert to fraction form
    439,898.40/607,060.80 = 238,694.40/x
  3. Step 3: Cross multiply
    439,898.40x = 607,060.80 × 238,694.40
  4. Step 4: Simplify right side
    439,898.40x = 144,902,013,419.52
  5. Step 5: Solve for x
    x = 144,902,013,419.52/439,898.40
  6. Step 6: Final answer
    x = 329,398.82

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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.