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Finding the Fourth Proportional to 480,452.70, 720,669.94 and 143,494.32

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Solution

The fourth proportional to 480,452.70, 720,669.94 and 143,494.32 is: 215,238.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,452.70 : 720,669.94 = 143,494.32 : x
  2. Step 2: Convert to fraction form
    480,452.70/720,669.94 = 143,494.32/x
  3. Step 3: Cross multiply
    480,452.70x = 720,669.94 × 143,494.32
  4. Step 4: Simplify right side
    480,452.70x = 103,412,042,984.74
  5. Step 5: Solve for x
    x = 103,412,042,984.74/480,452.70
  6. Step 6: Final answer
    x = 215,238.76

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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.