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Finding the Fourth Proportional to 499,621.65, 749,425.50 and 120,539.16

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Solution

The fourth proportional to 499,621.65, 749,425.50 and 120,539.16 is: 180,807.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,621.65 : 749,425.50 = 120,539.16 : x
  2. Step 2: Convert to fraction form
    499,621.65/749,425.50 = 120,539.16/x
  3. Step 3: Cross multiply
    499,621.65x = 749,425.50 × 120,539.16
  4. Step 4: Simplify right side
    499,621.65x = 90,335,120,252.58
  5. Step 5: Solve for x
    x = 90,335,120,252.58/499,621.65
  6. Step 6: Final answer
    x = 180,807.06

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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.