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Finding the Fourth Proportional to 402,737.96, 555,790.48 and 221,440.52

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Solution

The fourth proportional to 402,737.96, 555,790.48 and 221,440.52 is: 305,594.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,737.96 : 555,790.48 = 221,440.52 : x
  2. Step 2: Convert to fraction form
    402,737.96/555,790.48 = 221,440.52/x
  3. Step 3: Cross multiply
    402,737.96x = 555,790.48 × 221,440.52
  4. Step 4: Simplify right side
    402,737.96x = 123,074,532,902.25
  5. Step 5: Solve for x
    x = 123,074,532,902.25/402,737.96
  6. Step 6: Final answer
    x = 305,594.57

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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.