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Finding the Fourth Proportional to 320,691.71, 480,890.32 and 92,935.55

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Solution

The fourth proportional to 320,691.71, 480,890.32 and 92,935.55 is: 139,360.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,691.71 : 480,890.32 = 92,935.55 : x
  2. Step 2: Convert to fraction form
    320,691.71/480,890.32 = 92,935.55/x
  3. Step 3: Cross multiply
    320,691.71x = 480,890.32 × 92,935.55
  4. Step 4: Simplify right side
    320,691.71x = 44,691,806,378.88
  5. Step 5: Solve for x
    x = 44,691,806,378.88/320,691.71
  6. Step 6: Final answer
    x = 139,360.65

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1.5x scale

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.