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Finding the Fourth Proportional to 316,656.29, 436,986.34 and 171,463.65

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Solution

The fourth proportional to 316,656.29, 436,986.34 and 171,463.65 is: 236,620.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,656.29 : 436,986.34 = 171,463.65 : x
  2. Step 2: Convert to fraction form
    316,656.29/436,986.34 = 171,463.65/x
  3. Step 3: Cross multiply
    316,656.29x = 436,986.34 × 171,463.65
  4. Step 4: Simplify right side
    316,656.29x = 74,927,272,427.88
  5. Step 5: Solve for x
    x = 74,927,272,427.88/316,656.29
  6. Step 6: Final answer
    x = 236,620.20

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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.