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Finding the Fourth Proportional to 338,652.40, 507,942.96 and 138,993.92

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Solution

The fourth proportional to 338,652.40, 507,942.96 and 138,993.92 is: 208,476.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,652.40 : 507,942.96 = 138,993.92 : x
  2. Step 2: Convert to fraction form
    338,652.40/507,942.96 = 138,993.92/x
  3. Step 3: Cross multiply
    338,652.40x = 507,942.96 × 138,993.92
  4. Step 4: Simplify right side
    338,652.40x = 70,600,983,146.80
  5. Step 5: Solve for x
    x = 70,600,983,146.80/338,652.40
  6. Step 6: Final answer
    x = 208,476.25

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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.