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Finding the Fourth Proportional to 316,009.49, 436,093.14 and 172,769.57

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Solution

The fourth proportional to 316,009.49, 436,093.14 and 172,769.57 is: 238,422.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,009.49 : 436,093.14 = 172,769.57 : x
  2. Step 2: Convert to fraction form
    316,009.49/436,093.14 = 172,769.57/x
  3. Step 3: Cross multiply
    316,009.49x = 436,093.14 × 172,769.57
  4. Step 4: Simplify right side
    316,009.49x = 75,343,622,097.28
  5. Step 5: Solve for x
    x = 75,343,622,097.28/316,009.49
  6. Step 6: Final answer
    x = 238,422.03

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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.