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Finding the Fourth Proportional to 402,902.78, 556,195.98 and 255,801.52

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Solution

The fourth proportional to 402,902.78, 556,195.98 and 255,801.52 is: 353,126.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,902.78 : 556,195.98 = 255,801.52 : x
  2. Step 2: Convert to fraction form
    402,902.78/556,195.98 = 255,801.52/x
  3. Step 3: Cross multiply
    402,902.78x = 556,195.98 × 255,801.52
  4. Step 4: Simplify right side
    402,902.78x = 142,275,777,101.89
  5. Step 5: Solve for x
    x = 142,275,777,101.89/402,902.78
  6. Step 6: Final answer
    x = 353,126.82

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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.