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Finding the Fourth Proportional to 235,877.20, 353,815.80 and 157,145.20

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Solution

The fourth proportional to 235,877.20, 353,815.80 and 157,145.20 is: 235,717.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,877.20 : 353,815.80 = 157,145.20 : x
  2. Step 2: Convert to fraction form
    235,877.20/353,815.80 = 157,145.20/x
  3. Step 3: Cross multiply
    235,877.20x = 353,815.80 × 157,145.20
  4. Step 4: Simplify right side
    235,877.20x = 55,600,454,654.16
  5. Step 5: Solve for x
    x = 55,600,454,654.16/235,877.20
  6. Step 6: Final answer
    x = 235,717.80

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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.