Home / 354,945.24-490,342.61-307,115.55

Finding the Fourth Proportional to 354,945.24, 490,342.61 and 307,115.55

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Solution

The fourth proportional to 354,945.24, 490,342.61 and 307,115.55 is: 424,267.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,945.24 : 490,342.61 = 307,115.55 : x
  2. Step 2: Convert to fraction form
    354,945.24/490,342.61 = 307,115.55/x
  3. Step 3: Cross multiply
    354,945.24x = 490,342.61 × 307,115.55
  4. Step 4: Simplify right side
    354,945.24x = 150,591,841,126.37
  5. Step 5: Solve for x
    x = 150,591,841,126.37/354,945.24
  6. Step 6: Final answer
    x = 424,267.81

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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.