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Finding the Fourth Proportional to 378,675.79, 522,501.20 and 225,728.23

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Solution

The fourth proportional to 378,675.79, 522,501.20 and 225,728.23 is: 311,462.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,675.79 : 522,501.20 = 225,728.23 : x
  2. Step 2: Convert to fraction form
    378,675.79/522,501.20 = 225,728.23/x
  3. Step 3: Cross multiply
    378,675.79x = 522,501.20 × 225,728.23
  4. Step 4: Simplify right side
    378,675.79x = 117,943,270,440.15
  5. Step 5: Solve for x
    x = 117,943,270,440.15/378,675.79
  6. Step 6: Final answer
    x = 311,462.40

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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.