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Finding the Fourth Proportional to 408,093.30, 612,139.95 and 248,426.10

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Solution

The fourth proportional to 408,093.30, 612,139.95 and 248,426.10 is: 372,639.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,093.30 : 612,139.95 = 248,426.10 : x
  2. Step 2: Convert to fraction form
    408,093.30/612,139.95 = 248,426.10/x
  3. Step 3: Cross multiply
    408,093.30x = 612,139.95 × 248,426.10
  4. Step 4: Simplify right side
    408,093.30x = 152,071,540,432.70
  5. Step 5: Solve for x
    x = 152,071,540,432.70/408,093.30
  6. Step 6: Final answer
    x = 372,639.15

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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.