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Finding the Fourth Proportional to 301,440.41, 416,020.86 and 172,390.88

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Solution

The fourth proportional to 301,440.41, 416,020.86 and 172,390.88 is: 237,918.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,440.41 : 416,020.86 = 172,390.88 : x
  2. Step 2: Convert to fraction form
    301,440.41/416,020.86 = 172,390.88/x
  3. Step 3: Cross multiply
    301,440.41x = 416,020.86 × 172,390.88
  4. Step 4: Simplify right side
    301,440.41x = 71,718,200,073.65
  5. Step 5: Solve for x
    x = 71,718,200,073.65/301,440.41
  6. Step 6: Final answer
    x = 237,918.34

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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.