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Finding the Fourth Proportional to 203,307.96, 280,542.20 and 112,641.28

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Solution

The fourth proportional to 203,307.96, 280,542.20 and 112,641.28 is: 155,432.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,307.96 : 280,542.20 = 112,641.28 : x
  2. Step 2: Convert to fraction form
    203,307.96/280,542.20 = 112,641.28/x
  3. Step 3: Cross multiply
    203,307.96x = 280,542.20 × 112,641.28
  4. Step 4: Simplify right side
    203,307.96x = 31,600,632,502.02
  5. Step 5: Solve for x
    x = 31,600,632,502.02/203,307.96
  6. Step 6: Final answer
    x = 155,432.34

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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.