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Finding the Fourth Proportional to 326,117.80, 489,176.70 and 146,202.90

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Solution

The fourth proportional to 326,117.80, 489,176.70 and 146,202.90 is: 219,304.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,117.80 : 489,176.70 = 146,202.90 : x
  2. Step 2: Convert to fraction form
    326,117.80/489,176.70 = 146,202.90/x
  3. Step 3: Cross multiply
    326,117.80x = 489,176.70 × 146,202.90
  4. Step 4: Simplify right side
    326,117.80x = 71,519,052,152.43
  5. Step 5: Solve for x
    x = 71,519,052,152.43/326,117.80
  6. Step 6: Final answer
    x = 219,304.35

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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.