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Finding the Fourth Proportional to 402,902.28, 556,195.29 and 255,801.03

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Solution

The fourth proportional to 402,902.28, 556,195.29 and 255,801.03 is: 353,126.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,902.28 : 556,195.29 = 255,801.03 : x
  2. Step 2: Convert to fraction form
    402,902.28/556,195.29 = 255,801.03/x
  3. Step 3: Cross multiply
    402,902.28x = 556,195.29 × 255,801.03
  4. Step 4: Simplify right side
    402,902.28x = 142,275,328,063.15
  5. Step 5: Solve for x
    x = 142,275,328,063.15/402,902.28
  6. Step 6: Final answer
    x = 353,126.14

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1.5x scale

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.