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Finding the Fourth Proportional to 247,139.76, 370,771.92 and 114,113.28

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Solution

The fourth proportional to 247,139.76, 370,771.92 and 114,113.28 is: 171,198.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,139.76 : 370,771.92 = 114,113.28 : x
  2. Step 2: Convert to fraction form
    247,139.76/370,771.92 = 114,113.28/x
  3. Step 3: Cross multiply
    247,139.76x = 370,771.92 × 114,113.28
  4. Step 4: Simplify right side
    247,139.76x = 42,309,999,923.10
  5. Step 5: Solve for x
    x = 42,309,999,923.10/247,139.76
  6. Step 6: Final answer
    x = 171,198.68

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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.