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Finding the Fourth Proportional to 203,412.72, 280,726.13 and 112,797.10

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Solution

The fourth proportional to 203,412.72, 280,726.13 and 112,797.10 is: 155,669.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,412.72 : 280,726.13 = 112,797.10 : x
  2. Step 2: Convert to fraction form
    203,412.72/280,726.13 = 112,797.10/x
  3. Step 3: Cross multiply
    203,412.72x = 280,726.13 × 112,797.10
  4. Step 4: Simplify right side
    203,412.72x = 31,665,091,390.61
  5. Step 5: Solve for x
    x = 31,665,091,390.61/203,412.72
  6. Step 6: Final answer
    x = 155,669.18

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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.