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Finding the Fourth Proportional to 317,027.43, 437,637.47 and 221,907.51

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Solution

The fourth proportional to 317,027.43, 437,637.47 and 221,907.51 is: 306,330.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,027.43 : 437,637.47 = 221,907.51 : x
  2. Step 2: Convert to fraction form
    317,027.43/437,637.47 = 221,907.51/x
  3. Step 3: Cross multiply
    317,027.43x = 437,637.47 × 221,907.51
  4. Step 4: Simplify right side
    317,027.43x = 97,115,040,140.86
  5. Step 5: Solve for x
    x = 97,115,040,140.86/317,027.43
  6. Step 6: Final answer
    x = 306,330.09

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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.