Home / 385,910.43-578,857.28-133,182.42

Finding the Fourth Proportional to 385,910.43, 578,857.28 and 133,182.42

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Solution

The fourth proportional to 385,910.43, 578,857.28 and 133,182.42 is: 199,770.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,910.43 : 578,857.28 = 133,182.42 : x
  2. Step 2: Convert to fraction form
    385,910.43/578,857.28 = 133,182.42/x
  3. Step 3: Cross multiply
    385,910.43x = 578,857.28 × 133,182.42
  4. Step 4: Simplify right side
    385,910.43x = 77,093,612,719.11
  5. Step 5: Solve for x
    x = 77,093,612,719.11/385,910.43
  6. Step 6: Final answer
    x = 199,770.74

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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.