Home / 320,699.52-442,272.96-275,363.28

Finding the Fourth Proportional to 320,699.52, 442,272.96 and 275,363.28

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Solution

The fourth proportional to 320,699.52, 442,272.96 and 275,363.28 is: 379,750.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,699.52 : 442,272.96 = 275,363.28 : x
  2. Step 2: Convert to fraction form
    320,699.52/442,272.96 = 275,363.28/x
  3. Step 3: Cross multiply
    320,699.52x = 442,272.96 × 275,363.28
  4. Step 4: Simplify right side
    320,699.52x = 121,785,732,920.91
  5. Step 5: Solve for x
    x = 121,785,732,920.91/320,699.52
  6. Step 6: Final answer
    x = 379,750.28

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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.