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Finding the Fourth Proportional to 203,483.76, 280,821.97 and 112,848.40

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Solution

The fourth proportional to 203,483.76, 280,821.97 and 112,848.40 is: 155,738.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,483.76 : 280,821.97 = 112,848.40 : x
  2. Step 2: Convert to fraction form
    203,483.76/280,821.97 = 112,848.40/x
  3. Step 3: Cross multiply
    203,483.76x = 280,821.97 × 112,848.40
  4. Step 4: Simplify right side
    203,483.76x = 31,690,309,999.35
  5. Step 5: Solve for x
    x = 31,690,309,999.35/203,483.76
  6. Step 6: Final answer
    x = 155,738.77

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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.