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Finding the Fourth Proportional to 520,142.91, 780,248.38 and 160,269.63

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Solution

The fourth proportional to 520,142.91, 780,248.38 and 160,269.63 is: 240,414.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,142.91 : 780,248.38 = 160,269.63 : x
  2. Step 2: Convert to fraction form
    520,142.91/780,248.38 = 160,269.63/x
  3. Step 3: Cross multiply
    520,142.91x = 780,248.38 × 160,269.63
  4. Step 4: Simplify right side
    520,142.91x = 125,050,119,170.70
  5. Step 5: Solve for x
    x = 125,050,119,170.70/520,142.91
  6. Step 6: Final answer
    x = 240,414.93

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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.