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Finding the Fourth Proportional to 480,916, 663,694.80 and 268,948

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Solution

The fourth proportional to 480,916, 663,694.80 and 268,948 is: 371,165.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,916 : 663,694.80 = 268,948 : x
  2. Step 2: Convert to fraction form
    480,916/663,694.80 = 268,948/x
  3. Step 3: Cross multiply
    480,916x = 663,694.80 × 268,948
  4. Step 4: Simplify right side
    480,916x = 178,499,389,070.40
  5. Step 5: Solve for x
    x = 178,499,389,070.40/480,916
  6. Step 6: Final answer
    x = 371,165.42

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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.