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Finding the Fourth Proportional to 479,601.16, 662,103.34 and 309,932.08

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Solution

The fourth proportional to 479,601.16, 662,103.34 and 309,932.08 is: 427,870.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,601.16 : 662,103.34 = 309,932.08 : x
  2. Step 2: Convert to fraction form
    479,601.16/662,103.34 = 309,932.08/x
  3. Step 3: Cross multiply
    479,601.16x = 662,103.34 × 309,932.08
  4. Step 4: Simplify right side
    479,601.16x = 205,207,065,341.15
  5. Step 5: Solve for x
    x = 205,207,065,341.15/479,601.16
  6. Step 6: Final answer
    x = 427,870.24

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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.