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Finding the Fourth Proportional to 254,860.61, 382,143.32 and 86,324.45

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Solution

The fourth proportional to 254,860.61, 382,143.32 and 86,324.45 is: 129,436.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,860.61 : 382,143.32 = 86,324.45 : x
  2. Step 2: Convert to fraction form
    254,860.61/382,143.32 = 86,324.45/x
  3. Step 3: Cross multiply
    254,860.61x = 382,143.32 × 86,324.45
  4. Step 4: Simplify right side
    254,860.61x = 32,988,311,488.55
  5. Step 5: Solve for x
    x = 32,988,311,488.55/254,860.61
  6. Step 6: Final answer
    x = 129,436.68

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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.