Home / 315,350.05-435,545.09-229,690.66

Finding the Fourth Proportional to 315,350.05, 435,545.09 and 229,690.66

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Solution

The fourth proportional to 315,350.05, 435,545.09 and 229,690.66 is: 317,236.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,350.05 : 435,545.09 = 229,690.66 : x
  2. Step 2: Convert to fraction form
    315,350.05/435,545.09 = 229,690.66/x
  3. Step 3: Cross multiply
    315,350.05x = 435,545.09 × 229,690.66
  4. Step 4: Simplify right side
    315,350.05x = 100,040,639,181.86
  5. Step 5: Solve for x
    x = 100,040,639,181.86/315,350.05
  6. Step 6: Final answer
    x = 317,236.80

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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.