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Finding the Fourth Proportional to 326,184.15, 489,400.77 and 126,644.64

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Solution

The fourth proportional to 326,184.15, 489,400.77 and 126,644.64 is: 190,015.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,184.15 : 489,400.77 = 126,644.64 : x
  2. Step 2: Convert to fraction form
    326,184.15/489,400.77 = 126,644.64/x
  3. Step 3: Cross multiply
    326,184.15x = 489,400.77 × 126,644.64
  4. Step 4: Simplify right side
    326,184.15x = 61,979,984,332.37
  5. Step 5: Solve for x
    x = 61,979,984,332.37/326,184.15
  6. Step 6: Final answer
    x = 190,015.32

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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.