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Finding the Fourth Proportional to 521,782.40, 781,766.40 and 240,723.20

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Solution

The fourth proportional to 521,782.40, 781,766.40 and 240,723.20 is: 360,666.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,782.40 : 781,766.40 = 240,723.20 : x
  2. Step 2: Convert to fraction form
    521,782.40/781,766.40 = 240,723.20/x
  3. Step 3: Cross multiply
    521,782.40x = 781,766.40 × 240,723.20
  4. Step 4: Simplify right side
    521,782.40x = 188,189,309,460.48
  5. Step 5: Solve for x
    x = 188,189,309,460.48/521,782.40
  6. Step 6: Final answer
    x = 360,666.27

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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.