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Finding the Fourth Proportional to 368,806.32, 553,267.80 and 132,143.76

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Solution

The fourth proportional to 368,806.32, 553,267.80 and 132,143.76 is: 198,236.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,806.32 : 553,267.80 = 132,143.76 : x
  2. Step 2: Convert to fraction form
    368,806.32/553,267.80 = 132,143.76/x
  3. Step 3: Cross multiply
    368,806.32x = 553,267.80 × 132,143.76
  4. Step 4: Simplify right side
    368,806.32x = 73,110,887,378.93
  5. Step 5: Solve for x
    x = 73,110,887,378.93/368,806.32
  6. Step 6: Final answer
    x = 198,236.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.