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Finding the Fourth Proportional to 202,339.13, 279,228 and 112,915.13

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Solution

The fourth proportional to 202,339.13, 279,228 and 112,915.13 is: 155,822.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,339.13 : 279,228 = 112,915.13 : x
  2. Step 2: Convert to fraction form
    202,339.13/279,228 = 112,915.13/x
  3. Step 3: Cross multiply
    202,339.13x = 279,228 × 112,915.13
  4. Step 4: Simplify right side
    202,339.13x = 31,529,065,919.64
  5. Step 5: Solve for x
    x = 31,529,065,919.64/202,339.13
  6. Step 6: Final answer
    x = 155,822.88

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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.