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Finding the Fourth Proportional to 326,044.40, 489,066.60 and 270,057.20

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Solution

The fourth proportional to 326,044.40, 489,066.60 and 270,057.20 is: 405,085.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,044.40 : 489,066.60 = 270,057.20 : x
  2. Step 2: Convert to fraction form
    326,044.40/489,066.60 = 270,057.20/x
  3. Step 3: Cross multiply
    326,044.40x = 489,066.60 × 270,057.20
  4. Step 4: Simplify right side
    326,044.40x = 132,075,956,609.52
  5. Step 5: Solve for x
    x = 132,075,956,609.52/326,044.40
  6. Step 6: Final answer
    x = 405,085.80

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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.