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Finding the Fourth Proportional to 319,944.40, 479,225.40 and 264,648.40

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Solution

The fourth proportional to 319,944.40, 479,225.40 and 264,648.40 is: 396,400.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,944.40 : 479,225.40 = 264,648.40 : x
  2. Step 2: Convert to fraction form
    319,944.40/479,225.40 = 264,648.40/x
  3. Step 3: Cross multiply
    319,944.40x = 479,225.40 × 264,648.40
  4. Step 4: Simplify right side
    319,944.40x = 126,826,235,349.36
  5. Step 5: Solve for x
    x = 126,826,235,349.36/319,944.40
  6. Step 6: Final answer
    x = 396,400.86

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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.