Home / 354,975.90-489,868.55-193,830.95

Finding the Fourth Proportional to 354,975.90, 489,868.55 and 193,830.95

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Solution

The fourth proportional to 354,975.90, 489,868.55 and 193,830.95 is: 267,487.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,975.90 : 489,868.55 = 193,830.95 : x
  2. Step 2: Convert to fraction form
    354,975.90/489,868.55 = 193,830.95/x
  3. Step 3: Cross multiply
    354,975.90x = 489,868.55 × 193,830.95
  4. Step 4: Simplify right side
    354,975.90x = 94,951,683,003.13
  5. Step 5: Solve for x
    x = 94,951,683,003.13/354,975.90
  6. Step 6: Final answer
    x = 267,487.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.