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Finding the Fourth Proportional to 247,718.20, 371,482.16 and 105,473.28

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Solution

The fourth proportional to 247,718.20, 371,482.16 and 105,473.28 is: 158,169.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,718.20 : 371,482.16 = 105,473.28 : x
  2. Step 2: Convert to fraction form
    247,718.20/371,482.16 = 105,473.28/x
  3. Step 3: Cross multiply
    247,718.20x = 371,482.16 × 105,473.28
  4. Step 4: Simplify right side
    247,718.20x = 39,181,441,876.68
  5. Step 5: Solve for x
    x = 39,181,441,876.68/247,718.20
  6. Step 6: Final answer
    x = 158,169.41

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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.