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Finding the Fourth Proportional to 486,934.80, 730,056.60 and 187,299.60

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Solution

The fourth proportional to 486,934.80, 730,056.60 and 187,299.60 is: 280,816.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,934.80 : 730,056.60 = 187,299.60 : x
  2. Step 2: Convert to fraction form
    486,934.80/730,056.60 = 187,299.60/x
  3. Step 3: Cross multiply
    486,934.80x = 730,056.60 × 187,299.60
  4. Step 4: Simplify right side
    486,934.80x = 136,739,309,157.36
  5. Step 5: Solve for x
    x = 136,739,309,157.36/486,934.80
  6. Step 6: Final answer
    x = 280,816.46

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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.