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Finding the Fourth Proportional to 326,700.32, 489,923.76 and 126,994.28

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Solution

The fourth proportional to 326,700.32, 489,923.76 and 126,994.28 is: 190,442.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,700.32 : 489,923.76 = 126,994.28 : x
  2. Step 2: Convert to fraction form
    326,700.32/489,923.76 = 126,994.28/x
  3. Step 3: Cross multiply
    326,700.32x = 489,923.76 × 126,994.28
  4. Step 4: Simplify right side
    326,700.32x = 62,217,515,156.09
  5. Step 5: Solve for x
    x = 62,217,515,156.09/326,700.32
  6. Step 6: Final answer
    x = 190,442.16

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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.