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Finding the Fourth Proportional to 452,993.95, 679,491.05 and 133,145.87

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Solution

The fourth proportional to 452,993.95, 679,491.05 and 133,145.87 is: 199,718.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,993.95 : 679,491.05 = 133,145.87 : x
  2. Step 2: Convert to fraction form
    452,993.95/679,491.05 = 133,145.87/x
  3. Step 3: Cross multiply
    452,993.95x = 679,491.05 × 133,145.87
  4. Step 4: Simplify right side
    452,993.95x = 90,471,427,009.46
  5. Step 5: Solve for x
    x = 90,471,427,009.46/452,993.95
  6. Step 6: Final answer
    x = 199,718.84

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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.