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Finding the Fourth Proportional to 382,379.88, 527,680.96 and 212,612.52

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Solution

The fourth proportional to 382,379.88, 527,680.96 and 212,612.52 is: 293,403.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,379.88 : 527,680.96 = 212,612.52 : x
  2. Step 2: Convert to fraction form
    382,379.88/527,680.96 = 212,612.52/x
  3. Step 3: Cross multiply
    382,379.88x = 527,680.96 × 212,612.52
  4. Step 4: Simplify right side
    382,379.88x = 112,191,578,661.62
  5. Step 5: Solve for x
    x = 112,191,578,661.62/382,379.88
  6. Step 6: Final answer
    x = 293,403.46

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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.