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Finding the Fourth Proportional to 316,007.98, 436,091.07 and 172,768.06

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Solution

The fourth proportional to 316,007.98, 436,091.07 and 172,768.06 is: 238,419.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,007.98 : 436,091.07 = 172,768.06 : x
  2. Step 2: Convert to fraction form
    316,007.98/436,091.07 = 172,768.06/x
  3. Step 3: Cross multiply
    316,007.98x = 436,091.07 × 172,768.06
  4. Step 4: Simplify right side
    316,007.98x = 75,342,609,108.99
  5. Step 5: Solve for x
    x = 75,342,609,108.99/316,007.98
  6. Step 6: Final answer
    x = 238,419.95

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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.