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Finding the Fourth Proportional to 665,255.60, 997,591.80 and 265,763.60

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Solution

The fourth proportional to 665,255.60, 997,591.80 and 265,763.60 is: 398,528.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,255.60 : 997,591.80 = 265,763.60 : x
  2. Step 2: Convert to fraction form
    665,255.60/997,591.80 = 265,763.60/x
  3. Step 3: Cross multiply
    665,255.60x = 997,591.80 × 265,763.60
  4. Step 4: Simplify right side
    665,255.60x = 265,123,588,098.48
  5. Step 5: Solve for x
    x = 265,123,588,098.48/665,255.60
  6. Step 6: Final answer
    x = 398,528.91

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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.