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Finding the Fourth Proportional to 439,688.52, 659,580.57 and 140,098.68

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Solution

The fourth proportional to 439,688.52, 659,580.57 and 140,098.68 is: 210,163.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,688.52 : 659,580.57 = 140,098.68 : x
  2. Step 2: Convert to fraction form
    439,688.52/659,580.57 = 140,098.68/x
  3. Step 3: Cross multiply
    439,688.52x = 659,580.57 × 140,098.68
  4. Step 4: Simplify right side
    439,688.52x = 92,406,367,210.65
  5. Step 5: Solve for x
    x = 92,406,367,210.65/439,688.52
  6. Step 6: Final answer
    x = 210,163.25

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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.