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Finding the Fourth Proportional to 245,632.46, 338,948.60 and 138,200.12

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Solution

The fourth proportional to 245,632.46, 338,948.60 and 138,200.12 is: 190,702.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,632.46 : 338,948.60 = 138,200.12 : x
  2. Step 2: Convert to fraction form
    245,632.46/338,948.60 = 138,200.12/x
  3. Step 3: Cross multiply
    245,632.46x = 338,948.60 × 138,200.12
  4. Step 4: Simplify right side
    245,632.46x = 46,842,737,193.83
  5. Step 5: Solve for x
    x = 46,842,737,193.83/245,632.46
  6. Step 6: Final answer
    x = 190,702.55

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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.