Home / 402,723.76-555,760.92-221,447.40

Finding the Fourth Proportional to 402,723.76, 555,760.92 and 221,447.40

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Solution

The fourth proportional to 402,723.76, 555,760.92 and 221,447.40 is: 305,598.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,723.76 : 555,760.92 = 221,447.40 : x
  2. Step 2: Convert to fraction form
    402,723.76/555,760.92 = 221,447.40/x
  3. Step 3: Cross multiply
    402,723.76x = 555,760.92 × 221,447.40
  4. Step 4: Simplify right side
    402,723.76x = 123,071,810,755.61
  5. Step 5: Solve for x
    x = 123,071,810,755.61/402,723.76
  6. Step 6: Final answer
    x = 305,598.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.