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Finding the Fourth Proportional to 316,630.62, 436,950.45 and 171,435.96

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Solution

The fourth proportional to 316,630.62, 436,950.45 and 171,435.96 is: 236,581.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,630.62 : 436,950.45 = 171,435.96 : x
  2. Step 2: Convert to fraction form
    316,630.62/436,950.45 = 171,435.96/x
  3. Step 3: Cross multiply
    316,630.62x = 436,950.45 × 171,435.96
  4. Step 4: Simplify right side
    316,630.62x = 74,909,019,868.18
  5. Step 5: Solve for x
    x = 74,909,019,868.18/316,630.62
  6. Step 6: Final answer
    x = 236,581.73

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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.