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Finding the Fourth Proportional to 316,607.31, 436,918.77 and 171,414.66

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Solution

The fourth proportional to 316,607.31, 436,918.77 and 171,414.66 is: 236,552.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,607.31 : 436,918.77 = 171,414.66 : x
  2. Step 2: Convert to fraction form
    316,607.31/436,918.77 = 171,414.66/x
  3. Step 3: Cross multiply
    316,607.31x = 436,918.77 × 171,414.66
  4. Step 4: Simplify right side
    316,607.31x = 74,894,282,407.17
  5. Step 5: Solve for x
    x = 74,894,282,407.17/316,607.31
  6. Step 6: Final answer
    x = 236,552.60

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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.