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Finding the Fourth Proportional to 203,300.17, 280,555.89 and 112,657.65

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Solution

The fourth proportional to 203,300.17, 280,555.89 and 112,657.65 is: 155,468.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,300.17 : 280,555.89 = 112,657.65 : x
  2. Step 2: Convert to fraction form
    203,300.17/280,555.89 = 112,657.65/x
  3. Step 3: Cross multiply
    203,300.17x = 280,555.89 × 112,657.65
  4. Step 4: Simplify right side
    203,300.17x = 31,606,766,575.57
  5. Step 5: Solve for x
    x = 31,606,766,575.57/203,300.17
  6. Step 6: Final answer
    x = 155,468.47

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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.