Home / 261,764.20-392,937.90-143,666.20

Finding the Fourth Proportional to 261,764.20, 392,937.90 and 143,666.20

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Solution

The fourth proportional to 261,764.20, 392,937.90 and 143,666.20 is: 215,659.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,764.20 : 392,937.90 = 143,666.20 : x
  2. Step 2: Convert to fraction form
    261,764.20/392,937.90 = 143,666.20/x
  3. Step 3: Cross multiply
    261,764.20x = 392,937.90 × 143,666.20
  4. Step 4: Simplify right side
    261,764.20x = 56,451,894,928.98
  5. Step 5: Solve for x
    x = 56,451,894,928.98/261,764.20
  6. Step 6: Final answer
    x = 215,659.34

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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.