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Finding the Fourth Proportional to 240,474.30, 360,711.45 and 128,499.90

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Solution

The fourth proportional to 240,474.30, 360,711.45 and 128,499.90 is: 192,749.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,474.30 : 360,711.45 = 128,499.90 : x
  2. Step 2: Convert to fraction form
    240,474.30/360,711.45 = 128,499.90/x
  3. Step 3: Cross multiply
    240,474.30x = 360,711.45 × 128,499.90
  4. Step 4: Simplify right side
    240,474.30x = 46,351,385,253.86
  5. Step 5: Solve for x
    x = 46,351,385,253.86/240,474.30
  6. Step 6: Final answer
    x = 192,749.85

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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.