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Finding the Fourth Proportional to 499,641.59, 749,455.45 and 120,559.16

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Solution

The fourth proportional to 499,641.59, 749,455.45 and 120,559.16 is: 180,837.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,641.59 : 749,455.45 = 120,559.16 : x
  2. Step 2: Convert to fraction form
    499,641.59/749,455.45 = 120,559.16/x
  3. Step 3: Cross multiply
    499,641.59x = 749,455.45 × 120,559.16
  4. Step 4: Simplify right side
    499,641.59x = 90,353,721,081.66
  5. Step 5: Solve for x
    x = 90,353,721,081.66/499,641.59
  6. Step 6: Final answer
    x = 180,837.07

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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.