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Finding the Fourth Proportional to 442,877.10, 664,315.65 and 293,286.30

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Solution

The fourth proportional to 442,877.10, 664,315.65 and 293,286.30 is: 439,929.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,877.10 : 664,315.65 = 293,286.30 : x
  2. Step 2: Convert to fraction form
    442,877.10/664,315.65 = 293,286.30/x
  3. Step 3: Cross multiply
    442,877.10x = 664,315.65 × 293,286.30
  4. Step 4: Simplify right side
    442,877.10x = 194,834,679,020.60
  5. Step 5: Solve for x
    x = 194,834,679,020.60/442,877.10
  6. Step 6: Final answer
    x = 439,929.45

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Similar ratio
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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.