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Finding the Fourth Proportional to 326,037.40, 489,056.10 and 115,696.60

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Solution

The fourth proportional to 326,037.40, 489,056.10 and 115,696.60 is: 173,544.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,037.40 : 489,056.10 = 115,696.60 : x
  2. Step 2: Convert to fraction form
    326,037.40/489,056.10 = 115,696.60/x
  3. Step 3: Cross multiply
    326,037.40x = 489,056.10 × 115,696.60
  4. Step 4: Simplify right side
    326,037.40x = 56,582,127,979.26
  5. Step 5: Solve for x
    x = 56,582,127,979.26/326,037.40
  6. Step 6: Final answer
    x = 173,544.90

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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.