Home / 354,985.52-489,899.94-193,855.55

Finding the Fourth Proportional to 354,985.52, 489,899.94 and 193,855.55

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Solution

The fourth proportional to 354,985.52, 489,899.94 and 193,855.55 is: 267,531.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,985.52 : 489,899.94 = 193,855.55 : x
  2. Step 2: Convert to fraction form
    354,985.52/489,899.94 = 193,855.55/x
  3. Step 3: Cross multiply
    354,985.52x = 489,899.94 × 193,855.55
  4. Step 4: Simplify right side
    354,985.52x = 94,969,822,313.67
  5. Step 5: Solve for x
    x = 94,969,822,313.67/354,985.52
  6. Step 6: Final answer
    x = 267,531.54

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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.