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Finding the Fourth Proportional to 518,193.52, 777,396.40 and 218,674.15

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Solution

The fourth proportional to 518,193.52, 777,396.40 and 218,674.15 is: 328,056.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,193.52 : 777,396.40 = 218,674.15 : x
  2. Step 2: Convert to fraction form
    518,193.52/777,396.40 = 218,674.15/x
  3. Step 3: Cross multiply
    518,193.52x = 777,396.40 × 218,674.15
  4. Step 4: Simplify right side
    518,193.52x = 169,996,497,833.18
  5. Step 5: Solve for x
    x = 169,996,497,833.18/518,193.52
  6. Step 6: Final answer
    x = 328,056.01

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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.