Home / 309,834.84-424,787.19-304,236.12

Finding the Fourth Proportional to 309,834.84, 424,787.19 and 304,236.12

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Solution

The fourth proportional to 309,834.84, 424,787.19 and 304,236.12 is: 417,111.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,834.84 : 424,787.19 = 304,236.12 : x
  2. Step 2: Convert to fraction form
    309,834.84/424,787.19 = 304,236.12/x
  3. Step 3: Cross multiply
    309,834.84x = 424,787.19 × 304,236.12
  4. Step 4: Simplify right side
    309,834.84x = 129,235,606,511.30
  5. Step 5: Solve for x
    x = 129,235,606,511.30/309,834.84
  6. Step 6: Final answer
    x = 417,111.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.