Home / 320,479.71-442,317.50-193,155.45

Finding the Fourth Proportional to 320,479.71, 442,317.50 and 193,155.45

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Solution

The fourth proportional to 320,479.71, 442,317.50 and 193,155.45 is: 266,587.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,479.71 : 442,317.50 = 193,155.45 : x
  2. Step 2: Convert to fraction form
    320,479.71/442,317.50 = 193,155.45/x
  3. Step 3: Cross multiply
    320,479.71x = 442,317.50 × 193,155.45
  4. Step 4: Simplify right side
    320,479.71x = 85,436,034,789.60
  5. Step 5: Solve for x
    x = 85,436,034,789.60/320,479.71
  6. Step 6: Final answer
    x = 266,587.97

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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.