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Finding the Fourth Proportional to 439,906.64, 659,871.42 and 140,386.82

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Solution

The fourth proportional to 439,906.64, 659,871.42 and 140,386.82 is: 210,583.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,906.64 : 659,871.42 = 140,386.82 : x
  2. Step 2: Convert to fraction form
    439,906.64/659,871.42 = 140,386.82/x
  3. Step 3: Cross multiply
    439,906.64x = 659,871.42 × 140,386.82
  4. Step 4: Simplify right side
    439,906.64x = 92,637,249,560.75
  5. Step 5: Solve for x
    x = 92,637,249,560.75/439,906.64
  6. Step 6: Final answer
    x = 210,583.89

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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.