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Finding the Fourth Proportional to 250,421.16, 375,465.65 and 81,882.44

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Solution

The fourth proportional to 250,421.16, 375,465.65 and 81,882.44 is: 122,769.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,421.16 : 375,465.65 = 81,882.44 : x
  2. Step 2: Convert to fraction form
    250,421.16/375,465.65 = 81,882.44/x
  3. Step 3: Cross multiply
    250,421.16x = 375,465.65 × 81,882.44
  4. Step 4: Simplify right side
    250,421.16x = 30,744,041,680.86
  5. Step 5: Solve for x
    x = 30,744,041,680.86/250,421.16
  6. Step 6: Final answer
    x = 122,769.34

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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.