Home / 320,887.08-442,685.12-193,491.90

Finding the Fourth Proportional to 320,887.08, 442,685.12 and 193,491.90

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Solution

The fourth proportional to 320,887.08, 442,685.12 and 193,491.90 is: 266,934.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,887.08 : 442,685.12 = 193,491.90 : x
  2. Step 2: Convert to fraction form
    320,887.08/442,685.12 = 193,491.90/x
  3. Step 3: Cross multiply
    320,887.08x = 442,685.12 × 193,491.90
  4. Step 4: Simplify right side
    320,887.08x = 85,655,984,003.07
  5. Step 5: Solve for x
    x = 85,655,984,003.07/320,887.08
  6. Step 6: Final answer
    x = 266,934.97

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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.