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Finding the Fourth Proportional to 264,249, 396,414.81 and 86,715.63

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Solution

The fourth proportional to 264,249, 396,414.81 and 86,715.63 is: 130,087.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,249 : 396,414.81 = 86,715.63 : x
  2. Step 2: Convert to fraction form
    264,249/396,414.81 = 86,715.63/x
  3. Step 3: Cross multiply
    264,249x = 396,414.81 × 86,715.63
  4. Step 4: Simplify right side
    264,249x = 34,375,359,990.48
  5. Step 5: Solve for x
    x = 34,375,359,990.48/264,249
  6. Step 6: Final answer
    x = 130,087.00

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1.5x scale

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.