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Finding the Fourth Proportional to 326,256.66, 489,291.03 and 89,607.06

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Solution

The fourth proportional to 326,256.66, 489,291.03 and 89,607.06 is: 134,384.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,256.66 : 489,291.03 = 89,607.06 : x
  2. Step 2: Convert to fraction form
    326,256.66/489,291.03 = 89,607.06/x
  3. Step 3: Cross multiply
    326,256.66x = 489,291.03 × 89,607.06
  4. Step 4: Simplify right side
    326,256.66x = 43,843,930,682.67
  5. Step 5: Solve for x
    x = 43,843,930,682.67/326,256.66
  6. Step 6: Final answer
    x = 134,384.78

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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.