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Finding the Fourth Proportional to 245,463.20, 338,737.08 and 138,030.93

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Solution

The fourth proportional to 245,463.20, 338,737.08 and 138,030.93 is: 190,481.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,463.20 : 338,737.08 = 138,030.93 : x
  2. Step 2: Convert to fraction form
    245,463.20/338,737.08 = 138,030.93/x
  3. Step 3: Cross multiply
    245,463.20x = 338,737.08 × 138,030.93
  4. Step 4: Simplify right side
    245,463.20x = 46,756,194,177.88
  5. Step 5: Solve for x
    x = 46,756,194,177.88/245,463.20
  6. Step 6: Final answer
    x = 190,481.49

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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.