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Finding the Fourth Proportional to 247,282.40, 370,837.20 and 128,914.40

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Solution

The fourth proportional to 247,282.40, 370,837.20 and 128,914.40 is: 193,326.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,282.40 : 370,837.20 = 128,914.40 : x
  2. Step 2: Convert to fraction form
    247,282.40/370,837.20 = 128,914.40/x
  3. Step 3: Cross multiply
    247,282.40x = 370,837.20 × 128,914.40
  4. Step 4: Simplify right side
    247,282.40x = 47,806,255,135.68
  5. Step 5: Solve for x
    x = 47,806,255,135.68/247,282.40
  6. Step 6: Final answer
    x = 193,326.56

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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.