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Finding the Fourth Proportional to 326,042.15, 489,063.23 and 186,074.15

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Solution

The fourth proportional to 326,042.15, 489,063.23 and 186,074.15 is: 279,111.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,042.15 : 489,063.23 = 186,074.15 : x
  2. Step 2: Convert to fraction form
    326,042.15/489,063.23 = 186,074.15/x
  3. Step 3: Cross multiply
    326,042.15x = 489,063.23 × 186,074.15
  4. Step 4: Simplify right side
    326,042.15x = 91,002,023,888.13
  5. Step 5: Solve for x
    x = 91,002,023,888.13/326,042.15
  6. Step 6: Final answer
    x = 279,111.23

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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.