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Finding the Fourth Proportional to 255,059.10, 382,572.45 and 86,579.10

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Solution

The fourth proportional to 255,059.10, 382,572.45 and 86,579.10 is: 129,863.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,059.10 : 382,572.45 = 86,579.10 : x
  2. Step 2: Convert to fraction form
    255,059.10/382,572.45 = 86,579.10/x
  3. Step 3: Cross multiply
    255,059.10x = 382,572.45 × 86,579.10
  4. Step 4: Simplify right side
    255,059.10x = 33,122,778,405.80
  5. Step 5: Solve for x
    x = 33,122,778,405.80/255,059.10
  6. Step 6: Final answer
    x = 129,863.15

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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.