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Finding the Fourth Proportional to 303,355.20, 455,032.80 and 103,645.65

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Solution

The fourth proportional to 303,355.20, 455,032.80 and 103,645.65 is: 155,468.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,355.20 : 455,032.80 = 103,645.65 : x
  2. Step 2: Convert to fraction form
    303,355.20/455,032.80 = 103,645.65/x
  3. Step 3: Cross multiply
    303,355.20x = 455,032.80 × 103,645.65
  4. Step 4: Simplify right side
    303,355.20x = 47,162,170,327.32
  5. Step 5: Solve for x
    x = 47,162,170,327.32/303,355.20
  6. Step 6: Final answer
    x = 155,468.48

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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.