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Finding the Fourth Proportional to 338,679.20, 508,018.80 and 170,717.60

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Solution

The fourth proportional to 338,679.20, 508,018.80 and 170,717.60 is: 256,076.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,679.20 : 508,018.80 = 170,717.60 : x
  2. Step 2: Convert to fraction form
    338,679.20/508,018.80 = 170,717.60/x
  3. Step 3: Cross multiply
    338,679.20x = 508,018.80 × 170,717.60
  4. Step 4: Simplify right side
    338,679.20x = 86,727,750,290.88
  5. Step 5: Solve for x
    x = 86,727,750,290.88/338,679.20
  6. Step 6: Final answer
    x = 256,076.40

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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.