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Finding the Fourth Proportional to 308,934, 426,335.40 and 174,798

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Solution

The fourth proportional to 308,934, 426,335.40 and 174,798 is: 241,224.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,934 : 426,335.40 = 174,798 : x
  2. Step 2: Convert to fraction form
    308,934/426,335.40 = 174,798/x
  3. Step 3: Cross multiply
    308,934x = 426,335.40 × 174,798
  4. Step 4: Simplify right side
    308,934x = 74,522,575,249.20
  5. Step 5: Solve for x
    x = 74,522,575,249.20/308,934
  6. Step 6: Final answer
    x = 241,224.91

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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.