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Finding the Fourth Proportional to 545,170.13, 817,755 and 145,800.53

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Solution

The fourth proportional to 545,170.13, 817,755 and 145,800.53 is: 218,700.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,170.13 : 817,755 = 145,800.53 : x
  2. Step 2: Convert to fraction form
    545,170.13/817,755 = 145,800.53/x
  3. Step 3: Cross multiply
    545,170.13x = 817,755 × 145,800.53
  4. Step 4: Simplify right side
    545,170.13x = 119,229,112,410.15
  5. Step 5: Solve for x
    x = 119,229,112,410.15/545,170.13
  6. Step 6: Final answer
    x = 218,700.74

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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.