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Finding the Fourth Proportional to 203,083.13, 280,256.95 and 112,440.72

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Solution

The fourth proportional to 203,083.13, 280,256.95 and 112,440.72 is: 155,169.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,083.13 : 280,256.95 = 112,440.72 : x
  2. Step 2: Convert to fraction form
    203,083.13/280,256.95 = 112,440.72/x
  3. Step 3: Cross multiply
    203,083.13x = 280,256.95 × 112,440.72
  4. Step 4: Simplify right side
    203,083.13x = 31,512,293,802.04
  5. Step 5: Solve for x
    x = 31,512,293,802.04/203,083.13
  6. Step 6: Final answer
    x = 155,169.43

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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.