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Finding the Fourth Proportional to 358,877.20, 538,121.40 and 148,277.20

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Solution

The fourth proportional to 358,877.20, 538,121.40 and 148,277.20 is: 222,335.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,877.20 : 538,121.40 = 148,277.20 : x
  2. Step 2: Convert to fraction form
    358,877.20/538,121.40 = 148,277.20/x
  3. Step 3: Cross multiply
    358,877.20x = 538,121.40 × 148,277.20
  4. Step 4: Simplify right side
    358,877.20x = 79,791,134,452.08
  5. Step 5: Solve for x
    x = 79,791,134,452.08/358,877.20
  6. Step 6: Final answer
    x = 222,335.48

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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.