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Finding the Fourth Proportional to 545,740.64, 818,571 and 171,870.56

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Solution

The fourth proportional to 545,740.64, 818,571 and 171,870.56 is: 257,793.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,740.64 : 818,571 = 171,870.56 : x
  2. Step 2: Convert to fraction form
    545,740.64/818,571 = 171,870.56/x
  3. Step 3: Cross multiply
    545,740.64x = 818,571 × 171,870.56
  4. Step 4: Simplify right side
    545,740.64x = 140,688,256,169.76
  5. Step 5: Solve for x
    x = 140,688,256,169.76/545,740.64
  6. Step 6: Final answer
    x = 257,793.26

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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.