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Finding the Fourth Proportional to 252,700.35, 348,728.18 and 137,979.79

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Solution

The fourth proportional to 252,700.35, 348,728.18 and 137,979.79 is: 190,413.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,700.35 : 348,728.18 = 137,979.79 : x
  2. Step 2: Convert to fraction form
    252,700.35/348,728.18 = 137,979.79/x
  3. Step 3: Cross multiply
    252,700.35x = 348,728.18 × 137,979.79
  4. Step 4: Simplify right side
    252,700.35x = 48,117,440,353.58
  5. Step 5: Solve for x
    x = 48,117,440,353.58/252,700.35
  6. Step 6: Final answer
    x = 190,413.04

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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.