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Finding the Fourth Proportional to 354,985.77, 489,900.29 and 193,855.80

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Solution

The fourth proportional to 354,985.77, 489,900.29 and 193,855.80 is: 267,531.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,985.77 : 489,900.29 = 193,855.80 : x
  2. Step 2: Convert to fraction form
    354,985.77/489,900.29 = 193,855.80/x
  3. Step 3: Cross multiply
    354,985.77x = 489,900.29 × 193,855.80
  4. Step 4: Simplify right side
    354,985.77x = 94,970,011,668.90
  5. Step 5: Solve for x
    x = 94,970,011,668.90/354,985.77
  6. Step 6: Final answer
    x = 267,531.88

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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.