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Finding the Fourth Proportional to 312,745, 431,585.67 and 169,501.36

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Solution

The fourth proportional to 312,745, 431,585.67 and 169,501.36 is: 233,910.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,745 : 431,585.67 = 169,501.36 : x
  2. Step 2: Convert to fraction form
    312,745/431,585.67 = 169,501.36/x
  3. Step 3: Cross multiply
    312,745x = 431,585.67 × 169,501.36
  4. Step 4: Simplify right side
    312,745x = 73,154,358,021.51
  5. Step 5: Solve for x
    x = 73,154,358,021.51/312,745
  6. Step 6: Final answer
    x = 233,910.56

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.