Home / 317,828.78-438,478.31-204,717.18

Finding the Fourth Proportional to 317,828.78, 438,478.31 and 204,717.18

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Solution

The fourth proportional to 317,828.78, 438,478.31 and 204,717.18 is: 282,428.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,828.78 : 438,478.31 = 204,717.18 : x
  2. Step 2: Convert to fraction form
    317,828.78/438,478.31 = 204,717.18/x
  3. Step 3: Cross multiply
    317,828.78x = 438,478.31 × 204,717.18
  4. Step 4: Simplify right side
    317,828.78x = 89,764,043,114.37
  5. Step 5: Solve for x
    x = 89,764,043,114.37/317,828.78
  6. Step 6: Final answer
    x = 282,428.93

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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.