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Finding the Fourth Proportional to 247,746.60, 371,619.90 and 220,190.40

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Solution

The fourth proportional to 247,746.60, 371,619.90 and 220,190.40 is: 330,285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,746.60 : 371,619.90 = 220,190.40 : x
  2. Step 2: Convert to fraction form
    247,746.60/371,619.90 = 220,190.40/x
  3. Step 3: Cross multiply
    247,746.60x = 371,619.90 × 220,190.40
  4. Step 4: Simplify right side
    247,746.60x = 81,827,134,428.96
  5. Step 5: Solve for x
    x = 81,827,134,428.96/247,746.60
  6. Step 6: Final answer
    x = 330,285.60

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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.