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Finding the Fourth Proportional to 388,711.83, 536,105.14 and 326,381.73

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Solution

The fourth proportional to 388,711.83, 536,105.14 and 326,381.73 is: 450,140.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,711.83 : 536,105.14 = 326,381.73 : x
  2. Step 2: Convert to fraction form
    388,711.83/536,105.14 = 326,381.73/x
  3. Step 3: Cross multiply
    388,711.83x = 536,105.14 × 326,381.73
  4. Step 4: Simplify right side
    388,711.83x = 174,974,921,452.68
  5. Step 5: Solve for x
    x = 174,974,921,452.68/388,711.83
  6. Step 6: Final answer
    x = 450,140.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.