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Finding the Fourth Proportional to 378,925.92, 522,904.55 and 225,885.13

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Solution

The fourth proportional to 378,925.92, 522,904.55 and 225,885.13 is: 311,713.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,925.92 : 522,904.55 = 225,885.13 : x
  2. Step 2: Convert to fraction form
    378,925.92/522,904.55 = 225,885.13/x
  3. Step 3: Cross multiply
    378,925.92x = 522,904.55 × 225,885.13
  4. Step 4: Simplify right side
    378,925.92x = 118,116,359,817.65
  5. Step 5: Solve for x
    x = 118,116,359,817.65/378,925.92
  6. Step 6: Final answer
    x = 311,713.59

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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.