Home / 420,916.80-580,877.68-229,933.36

Finding the Fourth Proportional to 420,916.80, 580,877.68 and 229,933.36

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Solution

The fourth proportional to 420,916.80, 580,877.68 and 229,933.36 is: 317,314.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,916.80 : 580,877.68 = 229,933.36 : x
  2. Step 2: Convert to fraction form
    420,916.80/580,877.68 = 229,933.36/x
  3. Step 3: Cross multiply
    420,916.80x = 580,877.68 × 229,933.36
  4. Step 4: Simplify right side
    420,916.80x = 133,563,156,711.41
  5. Step 5: Solve for x
    x = 133,563,156,711.41/420,916.80
  6. Step 6: Final answer
    x = 317,314.86

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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.