Home / 371,916.29-513,491.64-285,721.76

Finding the Fourth Proportional to 371,916.29, 513,491.64 and 285,721.76

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Solution

The fourth proportional to 371,916.29, 513,491.64 and 285,721.76 is: 394,485.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,916.29 : 513,491.64 = 285,721.76 : x
  2. Step 2: Convert to fraction form
    371,916.29/513,491.64 = 285,721.76/x
  3. Step 3: Cross multiply
    371,916.29x = 513,491.64 × 285,721.76
  4. Step 4: Simplify right side
    371,916.29x = 146,715,735,126.09
  5. Step 5: Solve for x
    x = 146,715,735,126.09/371,916.29
  6. Step 6: Final answer
    x = 394,485.91

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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.