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Finding the Fourth Proportional to 203,487.76, 280,827.50 and 112,852.40

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Solution

The fourth proportional to 203,487.76, 280,827.50 and 112,852.40 is: 155,744.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,487.76 : 280,827.50 = 112,852.40 : x
  2. Step 2: Convert to fraction form
    203,487.76/280,827.50 = 112,852.40/x
  3. Step 3: Cross multiply
    203,487.76x = 280,827.50 × 112,852.40
  4. Step 4: Simplify right side
    203,487.76x = 31,692,057,361
  5. Step 5: Solve for x
    x = 31,692,057,361/203,487.76
  6. Step 6: Final answer
    x = 155,744.29

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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.