Home / 326,617,280.40-489,925,920.60-217,778,163.60

Finding the Fourth Proportional to 326,617,280.40, 489,925,920.60 and 217,778,163.60

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Solution

The fourth proportional to 326,617,280.40, 489,925,920.60 and 217,778,163.60 is: 326,667,245.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,617,280.40 : 489,925,920.60 = 217,778,163.60 : x
  2. Step 2: Convert to fraction form
    326,617,280.40/489,925,920.60 = 217,778,163.60/x
  3. Step 3: Cross multiply
    326,617,280.40x = 489,925,920.60 × 217,778,163.60
  4. Step 4: Simplify right side
    326,617,280.40x = 106,695,167,288,307,408
  5. Step 5: Solve for x
    x = 106,695,167,288,307,408/326,617,280.40
  6. Step 6: Final answer
    x = 326,667,245.40

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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.