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Finding the Fourth Proportional to 423,255.36, 634,509.31 and 323,859.24

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Solution

The fourth proportional to 423,255.36, 634,509.31 and 323,859.24 is: 485,502.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,255.36 : 634,509.31 = 323,859.24 : x
  2. Step 2: Convert to fraction form
    423,255.36/634,509.31 = 323,859.24/x
  3. Step 3: Cross multiply
    423,255.36x = 634,509.31 × 323,859.24
  4. Step 4: Simplify right side
    423,255.36x = 205,491,703,686.15
  5. Step 5: Solve for x
    x = 205,491,703,686.15/423,255.36
  6. Step 6: Final answer
    x = 485,502.90

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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.