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Finding the Fourth Proportional to 247,904.40, 371,419.20 and 154,300.80

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Solution

The fourth proportional to 247,904.40, 371,419.20 and 154,300.80 is: 231,178.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,904.40 : 371,419.20 = 154,300.80 : x
  2. Step 2: Convert to fraction form
    247,904.40/371,419.20 = 154,300.80/x
  3. Step 3: Cross multiply
    247,904.40x = 371,419.20 × 154,300.80
  4. Step 4: Simplify right side
    247,904.40x = 57,310,279,695.36
  5. Step 5: Solve for x
    x = 57,310,279,695.36/247,904.40
  6. Step 6: Final answer
    x = 231,178.95

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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.