Home / 426,335.80-639,795.30-236,795.80

Finding the Fourth Proportional to 426,335.80, 639,795.30 and 236,795.80

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Solution

The fourth proportional to 426,335.80, 639,795.30 and 236,795.80 is: 355,355.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,335.80 : 639,795.30 = 236,795.80 : x
  2. Step 2: Convert to fraction form
    426,335.80/639,795.30 = 236,795.80/x
  3. Step 3: Cross multiply
    426,335.80x = 639,795.30 × 236,795.80
  4. Step 4: Simplify right side
    426,335.80x = 151,500,839,899.74
  5. Step 5: Solve for x
    x = 151,500,839,899.74/426,335.80
  6. Step 6: Final answer
    x = 355,355.66

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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.