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Finding the Fourth Proportional to 520,246.10, 780,369.15 and 146,269.10

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Solution

The fourth proportional to 520,246.10, 780,369.15 and 146,269.10 is: 219,403.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,246.10 : 780,369.15 = 146,269.10 : x
  2. Step 2: Convert to fraction form
    520,246.10/780,369.15 = 146,269.10/x
  3. Step 3: Cross multiply
    520,246.10x = 780,369.15 × 146,269.10
  4. Step 4: Simplify right side
    520,246.10x = 114,143,893,238.27
  5. Step 5: Solve for x
    x = 114,143,893,238.27/520,246.10
  6. Step 6: Final answer
    x = 219,403.65

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Similar ratio
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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.