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Finding the Fourth Proportional to 326,536.16, 489,993.24 and 136,979.60

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Solution

The fourth proportional to 326,536.16, 489,993.24 and 136,979.60 is: 205,548.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,536.16 : 489,993.24 = 136,979.60 : x
  2. Step 2: Convert to fraction form
    326,536.16/489,993.24 = 136,979.60/x
  3. Step 3: Cross multiply
    326,536.16x = 489,993.24 × 136,979.60
  4. Step 4: Simplify right side
    326,536.16x = 67,119,078,017.90
  5. Step 5: Solve for x
    x = 67,119,078,017.90/326,536.16
  6. Step 6: Final answer
    x = 205,548.68

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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.