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Finding the Fourth Proportional to 378,440.91, 566,502.26 and 245,055.78

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Solution

The fourth proportional to 378,440.91, 566,502.26 and 245,055.78 is: 366,833.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,440.91 : 566,502.26 = 245,055.78 : x
  2. Step 2: Convert to fraction form
    378,440.91/566,502.26 = 245,055.78/x
  3. Step 3: Cross multiply
    378,440.91x = 566,502.26 × 245,055.78
  4. Step 4: Simplify right side
    378,440.91x = 138,824,651,970.78
  5. Step 5: Solve for x
    x = 138,824,651,970.78/378,440.91
  6. Step 6: Final answer
    x = 366,833.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.