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Finding the Fourth Proportional to 483,878.72, 667,790.00 and 290,293.70

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Solution

The fourth proportional to 483,878.72, 667,790.00 and 290,293.70 is: 400,627.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,878.72 : 667,790.00 = 290,293.70 : x
  2. Step 2: Convert to fraction form
    483,878.72/667,790.00 = 290,293.70/x
  3. Step 3: Cross multiply
    483,878.72x = 667,790.00 × 290,293.70
  4. Step 4: Simplify right side
    483,878.72x = 193,855,225,132.58
  5. Step 5: Solve for x
    x = 193,855,225,132.58/483,878.72
  6. Step 6: Final answer
    x = 400,627.72

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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.