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Finding the Fourth Proportional to 203,312.59, 280,558.67 and 112,663.26

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Solution

The fourth proportional to 203,312.59, 280,558.67 and 112,663.26 is: 155,468.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,312.59 : 280,558.67 = 112,663.26 : x
  2. Step 2: Convert to fraction form
    203,312.59/280,558.67 = 112,663.26/x
  3. Step 3: Cross multiply
    203,312.59x = 280,558.67 × 112,663.26
  4. Step 4: Simplify right side
    203,312.59x = 31,608,653,820.15
  5. Step 5: Solve for x
    x = 31,608,653,820.15/203,312.59
  6. Step 6: Final answer
    x = 155,468.26

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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.