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Finding the Fourth Proportional to 247,543.60, 371,315.40 and 147,816.40

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Solution

The fourth proportional to 247,543.60, 371,315.40 and 147,816.40 is: 221,724.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,543.60 : 371,315.40 = 147,816.40 : x
  2. Step 2: Convert to fraction form
    247,543.60/371,315.40 = 147,816.40/x
  3. Step 3: Cross multiply
    247,543.60x = 371,315.40 × 147,816.40
  4. Step 4: Simplify right side
    247,543.60x = 54,886,505,692.56
  5. Step 5: Solve for x
    x = 54,886,505,692.56/247,543.60
  6. Step 6: Final answer
    x = 221,724.60

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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.