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Finding the Fourth Proportional to 638,744.77, 958,117.29 and 259,871.68

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Solution

The fourth proportional to 638,744.77, 958,117.29 and 259,871.68 is: 389,807.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,744.77 : 958,117.29 = 259,871.68 : x
  2. Step 2: Convert to fraction form
    638,744.77/958,117.29 = 259,871.68/x
  3. Step 3: Cross multiply
    638,744.77x = 958,117.29 × 259,871.68
  4. Step 4: Simplify right side
    638,744.77x = 248,987,549,789.35
  5. Step 5: Solve for x
    x = 248,987,549,789.35/638,744.77
  6. Step 6: Final answer
    x = 389,807.57

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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.