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Finding the Fourth Proportional to 325,943.60, 489,203.40 and 192,657.20

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Solution

The fourth proportional to 325,943.60, 489,203.40 and 192,657.20 is: 289,156.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,943.60 : 489,203.40 = 192,657.20 : x
  2. Step 2: Convert to fraction form
    325,943.60/489,203.40 = 192,657.20/x
  3. Step 3: Cross multiply
    325,943.60x = 489,203.40 × 192,657.20
  4. Step 4: Simplify right side
    325,943.60x = 94,248,557,274.48
  5. Step 5: Solve for x
    x = 94,248,557,274.48/325,943.60
  6. Step 6: Final answer
    x = 289,156.03

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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.