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Finding the Fourth Proportional to 442,925.40, 664,388.10 and 127,363.80

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Solution

The fourth proportional to 442,925.40, 664,388.10 and 127,363.80 is: 191,045.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,925.40 : 664,388.10 = 127,363.80 : x
  2. Step 2: Convert to fraction form
    442,925.40/664,388.10 = 127,363.80/x
  3. Step 3: Cross multiply
    442,925.40x = 664,388.10 × 127,363.80
  4. Step 4: Simplify right side
    442,925.40x = 84,618,993,090.78
  5. Step 5: Solve for x
    x = 84,618,993,090.78/442,925.40
  6. Step 6: Final answer
    x = 191,045.70

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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.