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Finding the Fourth Proportional to 443,060.20, 664,590.30 and 256,436.20

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Solution

The fourth proportional to 443,060.20, 664,590.30 and 256,436.20 is: 384,654.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,060.20 : 664,590.30 = 256,436.20 : x
  2. Step 2: Convert to fraction form
    443,060.20/664,590.30 = 256,436.20/x
  3. Step 3: Cross multiply
    443,060.20x = 664,590.30 × 256,436.20
  4. Step 4: Simplify right side
    443,060.20x = 170,425,011,088.86
  5. Step 5: Solve for x
    x = 170,425,011,088.86/443,060.20
  6. Step 6: Final answer
    x = 384,654.30

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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.