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Finding the Fourth Proportional to 453,268.66, 679,789.95 and 133,356.87

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Solution

The fourth proportional to 453,268.66, 679,789.95 and 133,356.87 is: 200,002.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,268.66 : 679,789.95 = 133,356.87 : x
  2. Step 2: Convert to fraction form
    453,268.66/679,789.95 = 133,356.87/x
  3. Step 3: Cross multiply
    453,268.66x = 679,789.95 × 133,356.87
  4. Step 4: Simplify right side
    453,268.66x = 90,654,659,989.46
  5. Step 5: Solve for x
    x = 90,654,659,989.46/453,268.66
  6. Step 6: Final answer
    x = 200,002.05

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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.