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Finding the Fourth Proportional to 247,140.80, 370,711.20 and 245,585.60

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Solution

The fourth proportional to 247,140.80, 370,711.20 and 245,585.60 is: 368,378.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,140.80 : 370,711.20 = 245,585.60 : x
  2. Step 2: Convert to fraction form
    247,140.80/370,711.20 = 245,585.60/x
  3. Step 3: Cross multiply
    247,140.80x = 370,711.20 × 245,585.60
  4. Step 4: Simplify right side
    247,140.80x = 91,041,332,478.72
  5. Step 5: Solve for x
    x = 91,041,332,478.72/247,140.80
  6. Step 6: Final answer
    x = 368,378.40

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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.