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Finding the Fourth Proportional to 207,915.95, 286,924.22 and 112,422.62

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Solution

The fourth proportional to 207,915.95, 286,924.22 and 112,422.62 is: 155,143.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,915.95 : 286,924.22 = 112,422.62 : x
  2. Step 2: Convert to fraction form
    207,915.95/286,924.22 = 112,422.62/x
  3. Step 3: Cross multiply
    207,915.95x = 286,924.22 × 112,422.62
  4. Step 4: Simplify right side
    207,915.95x = 32,256,770,557.12
  5. Step 5: Solve for x
    x = 32,256,770,557.12/207,915.95
  6. Step 6: Final answer
    x = 155,143.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.