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Finding the Fourth Proportional to 301,439.90, 416,020.16 and 172,390.38

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Solution

The fourth proportional to 301,439.90, 416,020.16 and 172,390.38 is: 237,917.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,439.90 : 416,020.16 = 172,390.38 : x
  2. Step 2: Convert to fraction form
    301,439.90/416,020.16 = 172,390.38/x
  3. Step 3: Cross multiply
    301,439.90x = 416,020.16 × 172,390.38
  4. Step 4: Simplify right side
    301,439.90x = 71,717,873,470.06
  5. Step 5: Solve for x
    x = 71,717,873,470.06/301,439.90
  6. Step 6: Final answer
    x = 237,917.65

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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.