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Finding the Fourth Proportional to 326,301.95, 489,466.19 and 155,435.83

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Solution

The fourth proportional to 326,301.95, 489,466.19 and 155,435.83 is: 233,160.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,301.95 : 489,466.19 = 155,435.83 : x
  2. Step 2: Convert to fraction form
    326,301.95/489,466.19 = 155,435.83/x
  3. Step 3: Cross multiply
    326,301.95x = 489,466.19 × 155,435.83
  4. Step 4: Simplify right side
    326,301.95x = 76,080,582,664.51
  5. Step 5: Solve for x
    x = 76,080,582,664.51/326,301.95
  6. Step 6: Final answer
    x = 233,160.06

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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.