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Finding the Fourth Proportional to 268,678.32, 402,871.60 and 133,445.76

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Solution

The fourth proportional to 268,678.32, 402,871.60 and 133,445.76 is: 200,096.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,678.32 : 402,871.60 = 133,445.76 : x
  2. Step 2: Convert to fraction form
    268,678.32/402,871.60 = 133,445.76/x
  3. Step 3: Cross multiply
    268,678.32x = 402,871.60 × 133,445.76
  4. Step 4: Simplify right side
    268,678.32x = 53,761,506,844.42
  5. Step 5: Solve for x
    x = 53,761,506,844.42/268,678.32
  6. Step 6: Final answer
    x = 200,096.19

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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.