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Finding the Fourth Proportional to 338,909.60, 508,218.60 and 170,364.80

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Solution

The fourth proportional to 338,909.60, 508,218.60 and 170,364.80 is: 255,473.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,909.60 : 508,218.60 = 170,364.80 : x
  2. Step 2: Convert to fraction form
    338,909.60/508,218.60 = 170,364.80/x
  3. Step 3: Cross multiply
    338,909.60x = 508,218.60 × 170,364.80
  4. Step 4: Simplify right side
    338,909.60x = 86,582,560,145.28
  5. Step 5: Solve for x
    x = 86,582,560,145.28/338,909.60
  6. Step 6: Final answer
    x = 255,473.91

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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.