Home / 426,213.36-639,320.40-110,643.84

Finding the Fourth Proportional to 426,213.36, 639,320.40 and 110,643.84

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Solution

The fourth proportional to 426,213.36, 639,320.40 and 110,643.84 is: 165,965.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,213.36 : 639,320.40 = 110,643.84 : x
  2. Step 2: Convert to fraction form
    426,213.36/639,320.40 = 110,643.84/x
  3. Step 3: Cross multiply
    426,213.36x = 639,320.40 × 110,643.84
  4. Step 4: Simplify right side
    426,213.36x = 70,736,864,046.34
  5. Step 5: Solve for x
    x = 70,736,864,046.34/426,213.36
  6. Step 6: Final answer
    x = 165,965.85

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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.