Home / 309,309.18-426,876.63-173,366.22

Finding the Fourth Proportional to 309,309.18, 426,876.63 and 173,366.22

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Solution

The fourth proportional to 309,309.18, 426,876.63 and 173,366.22 is: 239,262.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,309.18 : 426,876.63 = 173,366.22 : x
  2. Step 2: Convert to fraction form
    309,309.18/426,876.63 = 173,366.22/x
  3. Step 3: Cross multiply
    309,309.18x = 426,876.63 × 173,366.22
  4. Step 4: Simplify right side
    309,309.18x = 74,005,987,749.44
  5. Step 5: Solve for x
    x = 74,005,987,749.44/309,309.18
  6. Step 6: Final answer
    x = 239,262.18

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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.