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Finding the Fourth Proportional to 545,170.65, 817,755.79 and 145,801.05

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Solution

The fourth proportional to 545,170.65, 817,755.79 and 145,801.05 is: 218,701.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,170.65 : 817,755.79 = 145,801.05 : x
  2. Step 2: Convert to fraction form
    545,170.65/817,755.79 = 145,801.05/x
  3. Step 3: Cross multiply
    545,170.65x = 817,755.79 × 145,801.05
  4. Step 4: Simplify right side
    545,170.65x = 119,229,652,912.74
  5. Step 5: Solve for x
    x = 119,229,652,912.74/545,170.65
  6. Step 6: Final answer
    x = 218,701.52

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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.