Home / 639,219.40-958,164.90-259,977.40

Finding the Fourth Proportional to 639,219.40, 958,164.90 and 259,977.40

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Solution

The fourth proportional to 639,219.40, 958,164.90 and 259,977.40 is: 389,695.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,219.40 : 958,164.90 = 259,977.40 : x
  2. Step 2: Convert to fraction form
    639,219.40/958,164.90 = 259,977.40/x
  3. Step 3: Cross multiply
    639,219.40x = 958,164.90 × 259,977.40
  4. Step 4: Simplify right side
    639,219.40x = 249,101,219,473.26
  5. Step 5: Solve for x
    x = 249,101,219,473.26/639,219.40
  6. Step 6: Final answer
    x = 389,695.96

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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.