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Finding the Fourth Proportional to 439,959.38, 607,143.96 and 238,755.38

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Solution

The fourth proportional to 439,959.38, 607,143.96 and 238,755.38 is: 329,482.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,959.38 : 607,143.96 = 238,755.38 : x
  2. Step 2: Convert to fraction form
    439,959.38/607,143.96 = 238,755.38/x
  3. Step 3: Cross multiply
    439,959.38x = 607,143.96 × 238,755.38
  4. Step 4: Simplify right side
    439,959.38x = 144,958,883,848.79
  5. Step 5: Solve for x
    x = 144,958,883,848.79/439,959.38
  6. Step 6: Final answer
    x = 329,482.43

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1.5x scale

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.