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Finding the Fourth Proportional to 421,259.88, 581,196.69 and 239,843.45

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Solution

The fourth proportional to 421,259.88, 581,196.69 and 239,843.45 is: 330,903.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,259.88 : 581,196.69 = 239,843.45 : x
  2. Step 2: Convert to fraction form
    421,259.88/581,196.69 = 239,843.45/x
  3. Step 3: Cross multiply
    421,259.88x = 581,196.69 × 239,843.45
  4. Step 4: Simplify right side
    421,259.88x = 139,396,216,352.20
  5. Step 5: Solve for x
    x = 139,396,216,352.20/421,259.88
  6. Step 6: Final answer
    x = 330,903.14

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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.