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Finding the Fourth Proportional to 338,498.21, 507,734.98 and 136,156.97

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Solution

The fourth proportional to 338,498.21, 507,734.98 and 136,156.97 is: 204,230.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,498.21 : 507,734.98 = 136,156.97 : x
  2. Step 2: Convert to fraction form
    338,498.21/507,734.98 = 136,156.97/x
  3. Step 3: Cross multiply
    338,498.21x = 507,734.98 × 136,156.97
  4. Step 4: Simplify right side
    338,498.21x = 69,131,656,439.81
  5. Step 5: Solve for x
    x = 69,131,656,439.81/338,498.21
  6. Step 6: Final answer
    x = 204,230.49

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1.5x scale

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.