Home / 326,078.10-489,117.15-214,103.70

Finding the Fourth Proportional to 326,078.10, 489,117.15 and 214,103.70

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Solution

The fourth proportional to 326,078.10, 489,117.15 and 214,103.70 is: 321,155.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,078.10 : 489,117.15 = 214,103.70 : x
  2. Step 2: Convert to fraction form
    326,078.10/489,117.15 = 214,103.70/x
  3. Step 3: Cross multiply
    326,078.10x = 489,117.15 × 214,103.70
  4. Step 4: Simplify right side
    326,078.10x = 104,721,791,548.46
  5. Step 5: Solve for x
    x = 104,721,791,548.46/326,078.10
  6. Step 6: Final answer
    x = 321,155.55

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1.5x scale

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.