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Finding the Fourth Proportional to 486,784.40, 730,285.40 and 171,251.60

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Solution

The fourth proportional to 486,784.40, 730,285.40 and 171,251.60 is: 256,915.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,784.40 : 730,285.40 = 171,251.60 : x
  2. Step 2: Convert to fraction form
    486,784.40/730,285.40 = 171,251.60/x
  3. Step 3: Cross multiply
    486,784.40x = 730,285.40 × 171,251.60
  4. Step 4: Simplify right side
    486,784.40x = 125,062,543,206.64
  5. Step 5: Solve for x
    x = 125,062,543,206.64/486,784.40
  6. Step 6: Final answer
    x = 256,915.68

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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.