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Finding the Fourth Proportional to 326,074.90, 489,112.35 and 148,927.90

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Solution

The fourth proportional to 326,074.90, 489,112.35 and 148,927.90 is: 223,391.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,074.90 : 489,112.35 = 148,927.90 : x
  2. Step 2: Convert to fraction form
    326,074.90/489,112.35 = 148,927.90/x
  3. Step 3: Cross multiply
    326,074.90x = 489,112.35 × 148,927.90
  4. Step 4: Simplify right side
    326,074.90x = 72,842,475,149.57
  5. Step 5: Solve for x
    x = 72,842,475,149.57/326,074.90
  6. Step 6: Final answer
    x = 223,391.85

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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.