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Finding the Fourth Proportional to 545,474.80, 818,340.98 and 171,497.80

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Solution

The fourth proportional to 545,474.80, 818,340.98 and 171,497.80 is: 257,287.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,474.80 : 818,340.98 = 171,497.80 : x
  2. Step 2: Convert to fraction form
    545,474.80/818,340.98 = 171,497.80/x
  3. Step 3: Cross multiply
    545,474.80x = 818,340.98 × 171,497.80
  4. Step 4: Simplify right side
    545,474.80x = 140,343,677,719.84
  5. Step 5: Solve for x
    x = 140,343,677,719.84/545,474.80
  6. Step 6: Final answer
    x = 257,287.19

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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.