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Finding the Fourth Proportional to 326,066.10, 489,099.15 and 148,919.10

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Solution

The fourth proportional to 326,066.10, 489,099.15 and 148,919.10 is: 223,378.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,066.10 : 489,099.15 = 148,919.10 : x
  2. Step 2: Convert to fraction form
    326,066.10/489,099.15 = 148,919.10/x
  3. Step 3: Cross multiply
    326,066.10x = 489,099.15 × 148,919.10
  4. Step 4: Simplify right side
    326,066.10x = 72,836,205,228.77
  5. Step 5: Solve for x
    x = 72,836,205,228.77/326,066.10
  6. Step 6: Final answer
    x = 223,378.65

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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.