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Finding the Fourth Proportional to 318,644.20, 477,966.30 and 268,877.80

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Solution

The fourth proportional to 318,644.20, 477,966.30 and 268,877.80 is: 403,316.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,644.20 : 477,966.30 = 268,877.80 : x
  2. Step 2: Convert to fraction form
    318,644.20/477,966.30 = 268,877.80/x
  3. Step 3: Cross multiply
    318,644.20x = 477,966.30 × 268,877.80
  4. Step 4: Simplify right side
    318,644.20x = 128,514,527,218.14
  5. Step 5: Solve for x
    x = 128,514,527,218.14/318,644.20
  6. Step 6: Final answer
    x = 403,316.70

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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.