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Finding the Fourth Proportional to 439,901.80, 607,071.54 and 238,697.80

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Solution

The fourth proportional to 439,901.80, 607,071.54 and 238,697.80 is: 329,406.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,901.80 : 607,071.54 = 238,697.80 : x
  2. Step 2: Convert to fraction form
    439,901.80/607,071.54 = 238,697.80/x
  3. Step 3: Cross multiply
    439,901.80x = 607,071.54 × 238,697.80
  4. Step 4: Simplify right side
    439,901.80x = 144,906,641,040.61
  5. Step 5: Solve for x
    x = 144,906,641,040.61/439,901.80
  6. Step 6: Final answer
    x = 329,406.79

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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.