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Finding the Fourth Proportional to 242,612.22, 363,901.02 and 90,780.42

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Solution

The fourth proportional to 242,612.22, 363,901.02 and 90,780.42 is: 136,164.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,612.22 : 363,901.02 = 90,780.42 : x
  2. Step 2: Convert to fraction form
    242,612.22/363,901.02 = 90,780.42/x
  3. Step 3: Cross multiply
    242,612.22x = 363,901.02 × 90,780.42
  4. Step 4: Simplify right side
    242,612.22x = 33,035,087,434.03
  5. Step 5: Solve for x
    x = 33,035,087,434.03/242,612.22
  6. Step 6: Final answer
    x = 136,164.15

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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.