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Finding the Fourth Proportional to 247,979.20, 371,983.20 and 70,499.20

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Solution

The fourth proportional to 247,979.20, 371,983.20 and 70,499.20 is: 105,752.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,979.20 : 371,983.20 = 70,499.20 : x
  2. Step 2: Convert to fraction form
    247,979.20/371,983.20 = 70,499.20/x
  3. Step 3: Cross multiply
    247,979.20x = 371,983.20 × 70,499.20
  4. Step 4: Simplify right side
    247,979.20x = 26,224,518,013.44
  5. Step 5: Solve for x
    x = 26,224,518,013.44/247,979.20
  6. Step 6: Final answer
    x = 105,752.89

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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.