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Finding the Fourth Proportional to 170,482.39, 255,357.25 and 138,317.08

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Solution

The fourth proportional to 170,482.39, 255,357.25 and 138,317.08 is: 207,178.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,482.39 : 255,357.25 = 138,317.08 : x
  2. Step 2: Convert to fraction form
    170,482.39/255,357.25 = 138,317.08/x
  3. Step 3: Cross multiply
    170,482.39x = 255,357.25 × 138,317.08
  4. Step 4: Simplify right side
    170,482.39x = 35,320,269,176.83
  5. Step 5: Solve for x
    x = 35,320,269,176.83/170,482.39
  6. Step 6: Final answer
    x = 207,178.40

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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.