Home / 320,561.28-480,869.46-83,903.58

Finding the Fourth Proportional to 320,561.28, 480,869.46 and 83,903.58

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Solution

The fourth proportional to 320,561.28, 480,869.46 and 83,903.58 is: 125,862.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,561.28 : 480,869.46 = 83,903.58 : x
  2. Step 2: Convert to fraction form
    320,561.28/480,869.46 = 83,903.58/x
  3. Step 3: Cross multiply
    320,561.28x = 480,869.46 × 83,903.58
  4. Step 4: Simplify right side
    320,561.28x = 40,346,669,206.67
  5. Step 5: Solve for x
    x = 40,346,669,206.67/320,561.28
  6. Step 6: Final answer
    x = 125,862.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.