Home / 320,607.38-442,614.76-240,005.90

Finding the Fourth Proportional to 320,607.38, 442,614.76 and 240,005.90

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Solution

The fourth proportional to 320,607.38, 442,614.76 and 240,005.90 is: 331,340.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,607.38 : 442,614.76 = 240,005.90 : x
  2. Step 2: Convert to fraction form
    320,607.38/442,614.76 = 240,005.90/x
  3. Step 3: Cross multiply
    320,607.38x = 442,614.76 × 240,005.90
  4. Step 4: Simplify right side
    320,607.38x = 106,230,151,614.01
  5. Step 5: Solve for x
    x = 106,230,151,614.01/320,607.38
  6. Step 6: Final answer
    x = 331,340.32

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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.