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Finding the Fourth Proportional to 203,062.84, 280,223.22 and 112,416.88

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Solution

The fourth proportional to 203,062.84, 280,223.22 and 112,416.88 is: 155,133.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,062.84 : 280,223.22 = 112,416.88 : x
  2. Step 2: Convert to fraction form
    203,062.84/280,223.22 = 112,416.88/x
  3. Step 3: Cross multiply
    203,062.84x = 280,223.22 × 112,416.88
  4. Step 4: Simplify right side
    203,062.84x = 31,501,820,095.95
  5. Step 5: Solve for x
    x = 31,501,820,095.95/203,062.84
  6. Step 6: Final answer
    x = 155,133.36

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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.