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Finding the Third Proportional to 155,287.55 and 328,479.05

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Solution

The third proportional to 155,287.55 and 328,479.05 is: 694,830.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,287.55 : 328,479.05 = 328,479.05 : x
  2. Step 2: Convert to fraction form
    155,287.55/328,479.05 = 328,479.05/x
  3. Step 3: Cross multiply
    155,287.55x = 328,479.05 × 328,479.05
  4. Step 4: Simplify right side
    155,287.55x = 107,898,484,235.91
  5. Step 5: Solve for x
    x = 107,898,484,235.91/155,287.55
  6. Step 6: Final answer
    x = 694,830.24

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.