Home / 338,321.07-507,420.30-135,909.01

Finding the Fourth Proportional to 338,321.07, 507,420.30 and 135,909.01

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Solution

The fourth proportional to 338,321.07, 507,420.30 and 135,909.01 is: 203,838.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,321.07 : 507,420.30 = 135,909.01 : x
  2. Step 2: Convert to fraction form
    338,321.07/507,420.30 = 135,909.01/x
  3. Step 3: Cross multiply
    338,321.07x = 507,420.30 × 135,909.01
  4. Step 4: Simplify right side
    338,321.07x = 68,962,990,626.90
  5. Step 5: Solve for x
    x = 68,962,990,626.90/338,321.07
  6. Step 6: Final answer
    x = 203,838.89

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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.