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Finding the Fourth Proportional to 326,441.40, 489,662.10 and 116,316.60

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Solution

The fourth proportional to 326,441.40, 489,662.10 and 116,316.60 is: 174,474.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,441.40 : 489,662.10 = 116,316.60 : x
  2. Step 2: Convert to fraction form
    326,441.40/489,662.10 = 116,316.60/x
  3. Step 3: Cross multiply
    326,441.40x = 489,662.10 × 116,316.60
  4. Step 4: Simplify right side
    326,441.40x = 56,955,830,620.86
  5. Step 5: Solve for x
    x = 56,955,830,620.86/326,441.40
  6. Step 6: Final answer
    x = 174,474.90

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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.