Home / 309,836.34-424,789.25-304,237.62

Finding the Fourth Proportional to 309,836.34, 424,789.25 and 304,237.62

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Solution

The fourth proportional to 309,836.34, 424,789.25 and 304,237.62 is: 417,113.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,836.34 : 424,789.25 = 304,237.62 : x
  2. Step 2: Convert to fraction form
    309,836.34/424,789.25 = 304,237.62/x
  3. Step 3: Cross multiply
    309,836.34x = 424,789.25 × 304,237.62
  4. Step 4: Simplify right side
    309,836.34x = 129,236,868,900.40
  5. Step 5: Solve for x
    x = 129,236,868,900.40/309,836.34
  6. Step 6: Final answer
    x = 417,113.33

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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.