Home / 320,343.75-442,000.89-191,257.07

Finding the Fourth Proportional to 320,343.75, 442,000.89 and 191,257.07

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Solution

The fourth proportional to 320,343.75, 442,000.89 and 191,257.07 is: 263,890.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,343.75 : 442,000.89 = 191,257.07 : x
  2. Step 2: Convert to fraction form
    320,343.75/442,000.89 = 191,257.07/x
  3. Step 3: Cross multiply
    320,343.75x = 442,000.89 × 191,257.07
  4. Step 4: Simplify right side
    320,343.75x = 84,535,792,948.79
  5. Step 5: Solve for x
    x = 84,535,792,948.79/320,343.75
  6. Step 6: Final answer
    x = 263,890.88

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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.