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Finding the Fourth Proportional to 311,545.02, 429,645.06 and 207,996.96

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Solution

The fourth proportional to 311,545.02, 429,645.06 and 207,996.96 is: 286,844.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,545.02 : 429,645.06 = 207,996.96 : x
  2. Step 2: Convert to fraction form
    311,545.02/429,645.06 = 207,996.96/x
  3. Step 3: Cross multiply
    311,545.02x = 429,645.06 × 207,996.96
  4. Step 4: Simplify right side
    311,545.02x = 89,364,866,359.02
  5. Step 5: Solve for x
    x = 89,364,866,359.02/311,545.02
  6. Step 6: Final answer
    x = 286,844.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.