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Finding the Fourth Proportional to 338,355.57, 507,493.85 and 135,943.52

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Solution

The fourth proportional to 338,355.57, 507,493.85 and 135,943.52 is: 203,899.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,355.57 : 507,493.85 = 135,943.52 : x
  2. Step 2: Convert to fraction form
    338,355.57/507,493.85 = 135,943.52/x
  3. Step 3: Cross multiply
    338,355.57x = 507,493.85 × 135,943.52
  4. Step 4: Simplify right side
    338,355.57x = 68,990,497,130.17
  5. Step 5: Solve for x
    x = 68,990,497,130.17/338,355.57
  6. Step 6: Final answer
    x = 203,899.40

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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.