Home / 378,327.67-522,066.03-212,780.43

Finding the Fourth Proportional to 378,327.67, 522,066.03 and 212,780.43

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Solution

The fourth proportional to 378,327.67, 522,066.03 and 212,780.43 is: 293,622.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,327.67 : 522,066.03 = 212,780.43 : x
  2. Step 2: Convert to fraction form
    378,327.67/522,066.03 = 212,780.43/x
  3. Step 3: Cross multiply
    378,327.67x = 522,066.03 × 212,780.43
  4. Step 4: Simplify right side
    378,327.67x = 111,085,432,248.70
  5. Step 5: Solve for x
    x = 111,085,432,248.70/378,327.67
  6. Step 6: Final answer
    x = 293,622.28

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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.