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Finding the Fourth Proportional to 326,230.20, 489,345.30 and 292,015.80

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Solution

The fourth proportional to 326,230.20, 489,345.30 and 292,015.80 is: 438,023.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,230.20 : 489,345.30 = 292,015.80 : x
  2. Step 2: Convert to fraction form
    326,230.20/489,345.30 = 292,015.80/x
  3. Step 3: Cross multiply
    326,230.20x = 489,345.30 × 292,015.80
  4. Step 4: Simplify right side
    326,230.20x = 142,896,559,255.74
  5. Step 5: Solve for x
    x = 142,896,559,255.74/326,230.20
  6. Step 6: Final answer
    x = 438,023.70

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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.