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Finding the Fourth Proportional to 403,903.53, 557,379.45 and 220,143.69

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Solution

The fourth proportional to 403,903.53, 557,379.45 and 220,143.69 is: 303,794.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,903.53 : 557,379.45 = 220,143.69 : x
  2. Step 2: Convert to fraction form
    403,903.53/557,379.45 = 220,143.69/x
  3. Step 3: Cross multiply
    403,903.53x = 557,379.45 × 220,143.69
  4. Step 4: Simplify right side
    403,903.53x = 122,703,568,853.17
  5. Step 5: Solve for x
    x = 122,703,568,853.17/403,903.53
  6. Step 6: Final answer
    x = 303,794.25

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1.5x scale

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.