Home / 352,921.32-486,834.30-216,860.76

Finding the Fourth Proportional to 352,921.32, 486,834.30 and 216,860.76

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Solution

The fourth proportional to 352,921.32, 486,834.30 and 216,860.76 is: 299,146.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,921.32 : 486,834.30 = 216,860.76 : x
  2. Step 2: Convert to fraction form
    352,921.32/486,834.30 = 216,860.76/x
  3. Step 3: Cross multiply
    352,921.32x = 486,834.30 × 216,860.76
  4. Step 4: Simplify right side
    352,921.32x = 105,575,256,292.07
  5. Step 5: Solve for x
    x = 105,575,256,292.07/352,921.32
  6. Step 6: Final answer
    x = 299,146.72

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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.