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Finding the Fourth Proportional to 423,168.99, 634,794.39 and 123,642.74

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Solution

The fourth proportional to 423,168.99, 634,794.39 and 123,642.74 is: 185,476.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,168.99 : 634,794.39 = 123,642.74 : x
  2. Step 2: Convert to fraction form
    423,168.99/634,794.39 = 123,642.74/x
  3. Step 3: Cross multiply
    423,168.99x = 634,794.39 × 123,642.74
  4. Step 4: Simplify right side
    423,168.99x = 78,487,714,542.26
  5. Step 5: Solve for x
    x = 78,487,714,542.26/423,168.99
  6. Step 6: Final answer
    x = 185,476.05

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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.