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Finding the Fourth Proportional to 423,464.58, 635,063.02 and 139,108.41

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Solution

The fourth proportional to 423,464.58, 635,063.02 and 139,108.41 is: 208,618.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,464.58 : 635,063.02 = 139,108.41 : x
  2. Step 2: Convert to fraction form
    423,464.58/635,063.02 = 139,108.41/x
  3. Step 3: Cross multiply
    423,464.58x = 635,063.02 × 139,108.41
  4. Step 4: Simplify right side
    423,464.58x = 88,342,606,614.23
  5. Step 5: Solve for x
    x = 88,342,606,614.23/423,464.58
  6. Step 6: Final answer
    x = 208,618.64

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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.