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Finding the Fourth Proportional to 437,748.80, 656,234.40 and 288,060.80

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Solution

The fourth proportional to 437,748.80, 656,234.40 and 288,060.80 is: 431,835.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,748.80 : 656,234.40 = 288,060.80 : x
  2. Step 2: Convert to fraction form
    437,748.80/656,234.40 = 288,060.80/x
  3. Step 3: Cross multiply
    437,748.80x = 656,234.40 × 288,060.80
  4. Step 4: Simplify right side
    437,748.80x = 189,035,406,251.52
  5. Step 5: Solve for x
    x = 189,035,406,251.52/437,748.80
  6. Step 6: Final answer
    x = 431,835.35

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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.