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Finding the Fourth Proportional to 247,220.50, 370,812.12 and 78,734.02

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Solution

The fourth proportional to 247,220.50, 370,812.12 and 78,734.02 is: 118,095.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,220.50 : 370,812.12 = 78,734.02 : x
  2. Step 2: Convert to fraction form
    247,220.50/370,812.12 = 78,734.02/x
  3. Step 3: Cross multiply
    247,220.50x = 370,812.12 × 78,734.02
  4. Step 4: Simplify right side
    247,220.50x = 29,195,528,872.32
  5. Step 5: Solve for x
    x = 29,195,528,872.32/247,220.50
  6. Step 6: Final answer
    x = 118,095.10

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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.