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Finding the Fourth Proportional to 326,089.90, 489,110.55 and 136,501.30

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Solution

The fourth proportional to 326,089.90, 489,110.55 and 136,501.30 is: 204,741.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,089.90 : 489,110.55 = 136,501.30 : x
  2. Step 2: Convert to fraction form
    326,089.90/489,110.55 = 136,501.30/x
  3. Step 3: Cross multiply
    326,089.90x = 489,110.55 × 136,501.30
  4. Step 4: Simplify right side
    326,089.90x = 66,764,225,918.72
  5. Step 5: Solve for x
    x = 66,764,225,918.72/326,089.90
  6. Step 6: Final answer
    x = 204,741.78

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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.