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Finding the Fourth Proportional to 487,480.80, 730,875.60 and 187,845.60

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Solution

The fourth proportional to 487,480.80, 730,875.60 and 187,845.60 is: 281,635.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,480.80 : 730,875.60 = 187,845.60 : x
  2. Step 2: Convert to fraction form
    487,480.80/730,875.60 = 187,845.60/x
  3. Step 3: Cross multiply
    487,480.80x = 730,875.60 × 187,845.60
  4. Step 4: Simplify right side
    487,480.80x = 137,291,765,607.36
  5. Step 5: Solve for x
    x = 137,291,765,607.36/487,480.80
  6. Step 6: Final answer
    x = 281,635.23

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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.