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Finding the Fourth Proportional to 453,009.60, 679,708.80 and 231,393.60

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Solution

The fourth proportional to 453,009.60, 679,708.80 and 231,393.60 is: 347,189.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,009.60 : 679,708.80 = 231,393.60 : x
  2. Step 2: Convert to fraction form
    453,009.60/679,708.80 = 231,393.60/x
  3. Step 3: Cross multiply
    453,009.60x = 679,708.80 × 231,393.60
  4. Step 4: Simplify right side
    453,009.60x = 157,280,266,183.68
  5. Step 5: Solve for x
    x = 157,280,266,183.68/453,009.60
  6. Step 6: Final answer
    x = 347,189.70

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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.