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Finding the Fourth Proportional to 217,070.80, 324,972.60 and 154,862.80

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Solution

The fourth proportional to 217,070.80, 324,972.60 and 154,862.80 is: 231,842.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,070.80 : 324,972.60 = 154,862.80 : x
  2. Step 2: Convert to fraction form
    217,070.80/324,972.60 = 154,862.80/x
  3. Step 3: Cross multiply
    217,070.80x = 324,972.60 × 154,862.80
  4. Step 4: Simplify right side
    217,070.80x = 50,326,166,759.28
  5. Step 5: Solve for x
    x = 50,326,166,759.28/217,070.80
  6. Step 6: Final answer
    x = 231,842.18

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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.