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Finding the Fourth Proportional to 316,440.96, 436,686.93 and 171,246.64

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Solution

The fourth proportional to 316,440.96, 436,686.93 and 171,246.64 is: 236,319.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,440.96 : 436,686.93 = 171,246.64 : x
  2. Step 2: Convert to fraction form
    316,440.96/436,686.93 = 171,246.64/x
  3. Step 3: Cross multiply
    316,440.96x = 436,686.93 × 171,246.64
  4. Step 4: Simplify right side
    316,440.96x = 74,781,167,310.98
  5. Step 5: Solve for x
    x = 74,781,167,310.98/316,440.96
  6. Step 6: Final answer
    x = 236,319.49

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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.