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Finding the Fourth Proportional to 326,297.98, 489,460.24 and 155,431.86

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Solution

The fourth proportional to 326,297.98, 489,460.24 and 155,431.86 is: 233,154.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,297.98 : 489,460.24 = 155,431.86 : x
  2. Step 2: Convert to fraction form
    326,297.98/489,460.24 = 155,431.86/x
  3. Step 3: Cross multiply
    326,297.98x = 489,460.24 × 155,431.86
  4. Step 4: Simplify right side
    326,297.98x = 76,077,715,067.23
  5. Step 5: Solve for x
    x = 76,077,715,067.23/326,297.98
  6. Step 6: Final answer
    x = 233,154.11

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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.