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Finding the Fourth Proportional to 382,083.95, 573,090.78 and 129,335.55

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Solution

The fourth proportional to 382,083.95, 573,090.78 and 129,335.55 is: 193,991.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,083.95 : 573,090.78 = 129,335.55 : x
  2. Step 2: Convert to fraction form
    382,083.95/573,090.78 = 129,335.55/x
  3. Step 3: Cross multiply
    382,083.95x = 573,090.78 × 129,335.55
  4. Step 4: Simplify right side
    382,083.95x = 74,121,009,798.50
  5. Step 5: Solve for x
    x = 74,121,009,798.50/382,083.95
  6. Step 6: Final answer
    x = 193,991.42

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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.