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Finding the Fourth Proportional to 545,115.30, 817,672.95 and 308,919.30

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Solution

The fourth proportional to 545,115.30, 817,672.95 and 308,919.30 is: 463,378.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,115.30 : 817,672.95 = 308,919.30 : x
  2. Step 2: Convert to fraction form
    545,115.30/817,672.95 = 308,919.30/x
  3. Step 3: Cross multiply
    545,115.30x = 817,672.95 × 308,919.30
  4. Step 4: Simplify right side
    545,115.30x = 252,594,955,342.94
  5. Step 5: Solve for x
    x = 252,594,955,342.94/545,115.30
  6. Step 6: Final answer
    x = 463,378.95

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Similar ratio
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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.