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Finding the Fourth Proportional to 343,793.40, 515,819.70 and 166,457.40

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Solution

The fourth proportional to 343,793.40, 515,819.70 and 166,457.40 is: 249,748.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,793.40 : 515,819.70 = 166,457.40 : x
  2. Step 2: Convert to fraction form
    343,793.40/515,819.70 = 166,457.40/x
  3. Step 3: Cross multiply
    343,793.40x = 515,819.70 × 166,457.40
  4. Step 4: Simplify right side
    343,793.40x = 85,862,006,130.78
  5. Step 5: Solve for x
    x = 85,862,006,130.78/343,793.40
  6. Step 6: Final answer
    x = 249,748.85

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1.5x scale

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.