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Finding the Fourth Proportional to 545,065.20, 817,500.60 and 345,027.60

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Solution

The fourth proportional to 545,065.20, 817,500.60 and 345,027.60 is: 517,479.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,065.20 : 817,500.60 = 345,027.60 : x
  2. Step 2: Convert to fraction form
    545,065.20/817,500.60 = 345,027.60/x
  3. Step 3: Cross multiply
    545,065.20x = 817,500.60 × 345,027.60
  4. Step 4: Simplify right side
    545,065.20x = 282,060,270,016.56
  5. Step 5: Solve for x
    x = 282,060,270,016.56/545,065.20
  6. Step 6: Final answer
    x = 517,479.87

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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.