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Finding the Fourth Proportional to 245,557.52, 338,865.90 and 138,127.53

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Solution

The fourth proportional to 245,557.52, 338,865.90 and 138,127.53 is: 190,614.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,557.52 : 338,865.90 = 138,127.53 : x
  2. Step 2: Convert to fraction form
    245,557.52/338,865.90 = 138,127.53/x
  3. Step 3: Cross multiply
    245,557.52x = 338,865.90 × 138,127.53
  4. Step 4: Simplify right side
    245,557.52x = 46,806,708,614.88
  5. Step 5: Solve for x
    x = 46,806,708,614.88/245,557.52
  6. Step 6: Final answer
    x = 190,614.03

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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.