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Finding the Fourth Proportional to 341,405.40, 512,108.10 and 208,545.15

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Solution

The fourth proportional to 341,405.40, 512,108.10 and 208,545.15 is: 312,817.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,405.40 : 512,108.10 = 208,545.15 : x
  2. Step 2: Convert to fraction form
    341,405.40/512,108.10 = 208,545.15/x
  3. Step 3: Cross multiply
    341,405.40x = 512,108.10 × 208,545.15
  4. Step 4: Simplify right side
    341,405.40x = 106,797,660,530.72
  5. Step 5: Solve for x
    x = 106,797,660,530.72/341,405.40
  6. Step 6: Final answer
    x = 312,817.73

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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.