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Finding the Fourth Proportional to 521,104.60, 781,700.10 and 166,108.60

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Solution

The fourth proportional to 521,104.60, 781,700.10 and 166,108.60 is: 249,176.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,104.60 : 781,700.10 = 166,108.60 : x
  2. Step 2: Convert to fraction form
    521,104.60/781,700.10 = 166,108.60/x
  3. Step 3: Cross multiply
    521,104.60x = 781,700.10 × 166,108.60
  4. Step 4: Simplify right side
    521,104.60x = 129,847,109,230.86
  5. Step 5: Solve for x
    x = 129,847,109,230.86/521,104.60
  6. Step 6: Final answer
    x = 249,176.67

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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.