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Finding the Fourth Proportional to 217,959.60, 326,874.60 and 84,763.20

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Solution

The fourth proportional to 217,959.60, 326,874.60 and 84,763.20 is: 127,119.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,959.60 : 326,874.60 = 84,763.20 : x
  2. Step 2: Convert to fraction form
    217,959.60/326,874.60 = 84,763.20/x
  3. Step 3: Cross multiply
    217,959.60x = 326,874.60 × 84,763.20
  4. Step 4: Simplify right side
    217,959.60x = 27,706,937,094.72
  5. Step 5: Solve for x
    x = 27,706,937,094.72/217,959.60
  6. Step 6: Final answer
    x = 127,119.60

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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.