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Finding the Fourth Proportional to 247,358.80, 370,600.80 and 209,742.40

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Solution

The fourth proportional to 247,358.80, 370,600.80 and 209,742.40 is: 314,242.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,358.80 : 370,600.80 = 209,742.40 : x
  2. Step 2: Convert to fraction form
    247,358.80/370,600.80 = 209,742.40/x
  3. Step 3: Cross multiply
    247,358.80x = 370,600.80 × 209,742.40
  4. Step 4: Simplify right side
    247,358.80x = 77,730,701,233.92
  5. Step 5: Solve for x
    x = 77,730,701,233.92/247,358.80
  6. Step 6: Final answer
    x = 314,242.72

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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.