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Finding the Fourth Proportional to 258,245.76, 387,959.04 and 247,630.08

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Solution

The fourth proportional to 258,245.76, 387,959.04 and 247,630.08 is: 372,011.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,245.76 : 387,959.04 = 247,630.08 : x
  2. Step 2: Convert to fraction form
    258,245.76/387,959.04 = 247,630.08/x
  3. Step 3: Cross multiply
    258,245.76x = 387,959.04 × 247,630.08
  4. Step 4: Simplify right side
    258,245.76x = 96,070,328,111.92
  5. Step 5: Solve for x
    x = 96,070,328,111.92/258,245.76
  6. Step 6: Final answer
    x = 372,011.25

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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.