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Finding the Fourth Proportional to 452,988.95, 679,483.55 and 133,140.87

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Solution

The fourth proportional to 452,988.95, 679,483.55 and 133,140.87 is: 199,711.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,988.95 : 679,483.55 = 133,140.87 : x
  2. Step 2: Convert to fraction form
    452,988.95/679,483.55 = 133,140.87/x
  3. Step 3: Cross multiply
    452,988.95x = 679,483.55 × 133,140.87
  4. Step 4: Simplify right side
    452,988.95x = 90,467,031,330.54
  5. Step 5: Solve for x
    x = 90,467,031,330.54/452,988.95
  6. Step 6: Final answer
    x = 199,711.34

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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.