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Finding the Fourth Proportional to 520,246.86, 780,432.80 and 183,217.88

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Solution

The fourth proportional to 520,246.86, 780,432.80 and 183,217.88 is: 274,848.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,246.86 : 780,432.80 = 183,217.88 : x
  2. Step 2: Convert to fraction form
    520,246.86/780,432.80 = 183,217.88/x
  3. Step 3: Cross multiply
    520,246.86x = 780,432.80 × 183,217.88
  4. Step 4: Simplify right side
    520,246.86x = 142,989,238,280.21
  5. Step 5: Solve for x
    x = 142,989,238,280.21/520,246.86
  6. Step 6: Final answer
    x = 274,848.83

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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.