Home / 491,966.40-738,122.40-211,569.60

Finding the Fourth Proportional to 491,966.40, 738,122.40 and 211,569.60

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Solution

The fourth proportional to 491,966.40, 738,122.40 and 211,569.60 is: 317,428.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,966.40 : 738,122.40 = 211,569.60 : x
  2. Step 2: Convert to fraction form
    491,966.40/738,122.40 = 211,569.60/x
  3. Step 3: Cross multiply
    491,966.40x = 738,122.40 × 211,569.60
  4. Step 4: Simplify right side
    491,966.40x = 156,164,260,919.04
  5. Step 5: Solve for x
    x = 156,164,260,919.04/491,966.40
  6. Step 6: Final answer
    x = 317,428.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.