Home / 315,430.20-435,235.44-179,456.21

Finding the Fourth Proportional to 315,430.20, 435,235.44 and 179,456.21

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Solution

The fourth proportional to 315,430.20, 435,235.44 and 179,456.21 is: 247,616.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,430.20 : 435,235.44 = 179,456.21 : x
  2. Step 2: Convert to fraction form
    315,430.20/435,235.44 = 179,456.21/x
  3. Step 3: Cross multiply
    315,430.20x = 435,235.44 × 179,456.21
  4. Step 4: Simplify right side
    315,430.20x = 78,105,702,649.00
  5. Step 5: Solve for x
    x = 78,105,702,649.00/315,430.20
  6. Step 6: Final answer
    x = 247,616.44

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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.