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Finding the Fourth Proportional to 442,220.64, 663,330.55 and 138,616.98

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Solution

The fourth proportional to 442,220.64, 663,330.55 and 138,616.98 is: 207,925.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,220.64 : 663,330.55 = 138,616.98 : x
  2. Step 2: Convert to fraction form
    442,220.64/663,330.55 = 138,616.98/x
  3. Step 3: Cross multiply
    442,220.64x = 663,330.55 × 138,616.98
  4. Step 4: Simplify right side
    442,220.64x = 91,948,874,266.09
  5. Step 5: Solve for x
    x = 91,948,874,266.09/442,220.64
  6. Step 6: Final answer
    x = 207,925.34

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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.