Home / 279,167.24-385,645.38-216,315.56

Finding the Fourth Proportional to 279,167.24, 385,645.38 and 216,315.56

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Solution

The fourth proportional to 279,167.24, 385,645.38 and 216,315.56 is: 298,821.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,167.24 : 385,645.38 = 216,315.56 : x
  2. Step 2: Convert to fraction form
    279,167.24/385,645.38 = 216,315.56/x
  3. Step 3: Cross multiply
    279,167.24x = 385,645.38 × 216,315.56
  4. Step 4: Simplify right side
    279,167.24x = 83,421,096,336.11
  5. Step 5: Solve for x
    x = 83,421,096,336.11/279,167.24
  6. Step 6: Final answer
    x = 298,821.22

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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.