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Finding the Fourth Proportional to 216,637.25, 324,925.80 and 66,882.47

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Solution

The fourth proportional to 216,637.25, 324,925.80 and 66,882.47 is: 100,314.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,637.25 : 324,925.80 = 66,882.47 : x
  2. Step 2: Convert to fraction form
    216,637.25/324,925.80 = 66,882.47/x
  3. Step 3: Cross multiply
    216,637.25x = 324,925.80 × 66,882.47
  4. Step 4: Simplify right side
    216,637.25x = 21,731,838,446.10
  5. Step 5: Solve for x
    x = 21,731,838,446.10/216,637.25
  6. Step 6: Final answer
    x = 100,314.41

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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.