Home / 521,109.30-781,700.40-205,525.20

Finding the Fourth Proportional to 521,109.30, 781,700.40 and 205,525.20

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Solution

The fourth proportional to 521,109.30, 781,700.40 and 205,525.20 is: 308,302.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,109.30 : 781,700.40 = 205,525.20 : x
  2. Step 2: Convert to fraction form
    521,109.30/781,700.40 = 205,525.20/x
  3. Step 3: Cross multiply
    521,109.30x = 781,700.40 × 205,525.20
  4. Step 4: Simplify right side
    521,109.30x = 160,659,131,050.08
  5. Step 5: Solve for x
    x = 160,659,131,050.08/521,109.30
  6. Step 6: Final answer
    x = 308,302.18

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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.