Home / 221,242.80-331,499.40-127,585.20

Finding the Fourth Proportional to 221,242.80, 331,499.40 and 127,585.20

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Solution

The fourth proportional to 221,242.80, 331,499.40 and 127,585.20 is: 191,167.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,242.80 : 331,499.40 = 127,585.20 : x
  2. Step 2: Convert to fraction form
    221,242.80/331,499.40 = 127,585.20/x
  3. Step 3: Cross multiply
    221,242.80x = 331,499.40 × 127,585.20
  4. Step 4: Simplify right side
    221,242.80x = 42,294,417,248.88
  5. Step 5: Solve for x
    x = 42,294,417,248.88/221,242.80
  6. Step 6: Final answer
    x = 191,167.43

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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.