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Finding the Fourth Proportional to 306,881.15, 423,479.31 and 169,033.25

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Solution

The fourth proportional to 306,881.15, 423,479.31 and 169,033.25 is: 233,256.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,881.15 : 423,479.31 = 169,033.25 : x
  2. Step 2: Convert to fraction form
    306,881.15/423,479.31 = 169,033.25/x
  3. Step 3: Cross multiply
    306,881.15x = 423,479.31 × 169,033.25
  4. Step 4: Simplify right side
    306,881.15x = 71,582,081,959.66
  5. Step 5: Solve for x
    x = 71,582,081,959.66/306,881.15
  6. Step 6: Final answer
    x = 233,256.70

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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.