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Finding the Fourth Proportional to 310,081.92, 428,500.44 and 264,135.12

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Solution

The fourth proportional to 310,081.92, 428,500.44 and 264,135.12 is: 365,006.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,081.92 : 428,500.44 = 264,135.12 : x
  2. Step 2: Convert to fraction form
    310,081.92/428,500.44 = 264,135.12/x
  3. Step 3: Cross multiply
    310,081.92x = 428,500.44 × 264,135.12
  4. Step 4: Simplify right side
    310,081.92x = 113,182,015,139.45
  5. Step 5: Solve for x
    x = 113,182,015,139.45/310,081.92
  6. Step 6: Final answer
    x = 365,006.82

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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.