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Finding the Fourth Proportional to 203,342.10, 280,612.13 and 112,703.91

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Solution

The fourth proportional to 203,342.10, 280,612.13 and 112,703.91 is: 155,531.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,342.10 : 280,612.13 = 112,703.91 : x
  2. Step 2: Convert to fraction form
    203,342.10/280,612.13 = 112,703.91/x
  3. Step 3: Cross multiply
    203,342.10x = 280,612.13 × 112,703.91
  4. Step 4: Simplify right side
    203,342.10x = 31,626,083,680.91
  5. Step 5: Solve for x
    x = 31,626,083,680.91/203,342.10
  6. Step 6: Final answer
    x = 155,531.41

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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.