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Finding the Fourth Proportional to 480,217.10, 720,362.10 and 143,231.39

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Solution

The fourth proportional to 480,217.10, 720,362.10 and 143,231.39 is: 214,857.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,217.10 : 720,362.10 = 143,231.39 : x
  2. Step 2: Convert to fraction form
    480,217.10/720,362.10 = 143,231.39/x
  3. Step 3: Cross multiply
    480,217.10x = 720,362.10 × 143,231.39
  4. Step 4: Simplify right side
    480,217.10x = 103,178,461,284.51
  5. Step 5: Solve for x
    x = 103,178,461,284.51/480,217.10
  6. Step 6: Final answer
    x = 214,857.95

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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.