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Finding the Fourth Proportional to 611,520.60, 917,280.90 and 162,240.60

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Solution

The fourth proportional to 611,520.60, 917,280.90 and 162,240.60 is: 243,360.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,520.60 : 917,280.90 = 162,240.60 : x
  2. Step 2: Convert to fraction form
    611,520.60/917,280.90 = 162,240.60/x
  3. Step 3: Cross multiply
    611,520.60x = 917,280.90 × 162,240.60
  4. Step 4: Simplify right side
    611,520.60x = 148,820,203,584.54
  5. Step 5: Solve for x
    x = 148,820,203,584.54/611,520.60
  6. Step 6: Final answer
    x = 243,360.90

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Similar ratio
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1.5x scale

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.