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Finding the Fourth Proportional to 301,215.91, 451,530.10 and 143,401.99

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Solution

The fourth proportional to 301,215.91, 451,530.10 and 143,401.99 is: 214,963.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,215.91 : 451,530.10 = 143,401.99 : x
  2. Step 2: Convert to fraction form
    301,215.91/451,530.10 = 143,401.99/x
  3. Step 3: Cross multiply
    301,215.91x = 451,530.10 × 143,401.99
  4. Step 4: Simplify right side
    301,215.91x = 64,750,314,884.90
  5. Step 5: Solve for x
    x = 64,750,314,884.90/301,215.91
  6. Step 6: Final answer
    x = 214,963.13

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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.