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Finding the Fourth Proportional to 217,035.60, 325,522.20 and 83,978.64

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Solution

The fourth proportional to 217,035.60, 325,522.20 and 83,978.64 is: 125,955.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,035.60 : 325,522.20 = 83,978.64 : x
  2. Step 2: Convert to fraction form
    217,035.60/325,522.20 = 83,978.64/x
  3. Step 3: Cross multiply
    217,035.60x = 325,522.20 × 83,978.64
  4. Step 4: Simplify right side
    217,035.60x = 27,336,911,645.81
  5. Step 5: Solve for x
    x = 27,336,911,645.81/217,035.60
  6. Step 6: Final answer
    x = 125,955.89

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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.