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Finding the Fourth Proportional to 338,720.70, 508,081.05 and 170,759.10

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Solution

The fourth proportional to 338,720.70, 508,081.05 and 170,759.10 is: 256,138.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,720.70 : 508,081.05 = 170,759.10 : x
  2. Step 2: Convert to fraction form
    338,720.70/508,081.05 = 170,759.10/x
  3. Step 3: Cross multiply
    338,720.70x = 508,081.05 × 170,759.10
  4. Step 4: Simplify right side
    338,720.70x = 86,759,462,825.06
  5. Step 5: Solve for x
    x = 86,759,462,825.06/338,720.70
  6. Step 6: Final answer
    x = 256,138.65

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Similar ratio
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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.