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Finding the Fourth Proportional to 202,708.40, 279,738.24 and 112,069.40

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Solution

The fourth proportional to 202,708.40, 279,738.24 and 112,069.40 is: 154,656.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,708.40 : 279,738.24 = 112,069.40 : x
  2. Step 2: Convert to fraction form
    202,708.40/279,738.24 = 112,069.40/x
  3. Step 3: Cross multiply
    202,708.40x = 279,738.24 × 112,069.40
  4. Step 4: Simplify right side
    202,708.40x = 31,350,096,713.86
  5. Step 5: Solve for x
    x = 31,350,096,713.86/202,708.40
  6. Step 6: Final answer
    x = 154,656.13

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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.