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Finding the Fourth Proportional to 520,248.86, 780,435.80 and 183,219.88

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Solution

The fourth proportional to 520,248.86, 780,435.80 and 183,219.88 is: 274,851.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,248.86 : 780,435.80 = 183,219.88 : x
  2. Step 2: Convert to fraction form
    520,248.86/780,435.80 = 183,219.88/x
  3. Step 3: Cross multiply
    520,248.86x = 780,435.80 × 183,219.88
  4. Step 4: Simplify right side
    520,248.86x = 142,991,353,623.70
  5. Step 5: Solve for x
    x = 142,991,353,623.70/520,248.86
  6. Step 6: Final answer
    x = 274,851.83

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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.