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Finding the Fourth Proportional to 326,053.40, 489,080.10 and 89,395.70

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Solution

The fourth proportional to 326,053.40, 489,080.10 and 89,395.70 is: 134,093.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,053.40 : 489,080.10 = 89,395.70 : x
  2. Step 2: Convert to fraction form
    326,053.40/489,080.10 = 89,395.70/x
  3. Step 3: Cross multiply
    326,053.40x = 489,080.10 × 89,395.70
  4. Step 4: Simplify right side
    326,053.40x = 43,721,657,895.57
  5. Step 5: Solve for x
    x = 43,721,657,895.57/326,053.40
  6. Step 6: Final answer
    x = 134,093.55

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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.