Home / 378,156.60-521,656.20-225,086.04

Finding the Fourth Proportional to 378,156.60, 521,656.20 and 225,086.04

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Solution

The fourth proportional to 378,156.60, 521,656.20 and 225,086.04 is: 310,499.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,156.60 : 521,656.20 = 225,086.04 : x
  2. Step 2: Convert to fraction form
    378,156.60/521,656.20 = 225,086.04/x
  3. Step 3: Cross multiply
    378,156.60x = 521,656.20 × 225,086.04
  4. Step 4: Simplify right side
    378,156.60x = 117,417,528,299.45
  5. Step 5: Solve for x
    x = 117,417,528,299.45/378,156.60
  6. Step 6: Final answer
    x = 310,499.75

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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.