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Finding the Fourth Proportional to 442,887.90, 664,331.85 and 127,326.30

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Solution

The fourth proportional to 442,887.90, 664,331.85 and 127,326.30 is: 190,989.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,887.90 : 664,331.85 = 127,326.30 : x
  2. Step 2: Convert to fraction form
    442,887.90/664,331.85 = 127,326.30/x
  3. Step 3: Cross multiply
    442,887.90x = 664,331.85 × 127,326.30
  4. Step 4: Simplify right side
    442,887.90x = 84,586,916,432.66
  5. Step 5: Solve for x
    x = 84,586,916,432.66/442,887.90
  6. Step 6: Final answer
    x = 190,989.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.