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Finding the Fourth Proportional to 316,146.78, 436,277.07 and 172,903.68

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Solution

The fourth proportional to 316,146.78, 436,277.07 and 172,903.68 is: 238,604.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,146.78 : 436,277.07 = 172,903.68 : x
  2. Step 2: Convert to fraction form
    316,146.78/436,277.07 = 172,903.68/x
  3. Step 3: Cross multiply
    316,146.78x = 436,277.07 × 172,903.68
  4. Step 4: Simplify right side
    316,146.78x = 75,433,910,902.62
  5. Step 5: Solve for x
    x = 75,433,910,902.62/316,146.78
  6. Step 6: Final answer
    x = 238,604.08

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1.5x scale

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.