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Finding the Fourth Proportional to 326,574.45, 489,892.59 and 126,910.23

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Solution

The fourth proportional to 326,574.45, 489,892.59 and 126,910.23 is: 190,377.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,574.45 : 489,892.59 = 126,910.23 : x
  2. Step 2: Convert to fraction form
    326,574.45/489,892.59 = 126,910.23/x
  3. Step 3: Cross multiply
    326,574.45x = 489,892.59 × 126,910.23
  4. Step 4: Simplify right side
    326,574.45x = 62,172,382,190.74
  5. Step 5: Solve for x
    x = 62,172,382,190.74/326,574.45
  6. Step 6: Final answer
    x = 190,377.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.