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Finding the Fourth Proportional to 338,513.78, 507,660.01 and 113,813.91

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Solution

The fourth proportional to 338,513.78, 507,660.01 and 113,813.91 is: 170,683.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,513.78 : 507,660.01 = 113,813.91 : x
  2. Step 2: Convert to fraction form
    338,513.78/507,660.01 = 113,813.91/x
  3. Step 3: Cross multiply
    338,513.78x = 507,660.01 × 113,813.91
  4. Step 4: Simplify right side
    338,513.78x = 57,778,770,404.20
  5. Step 5: Solve for x
    x = 57,778,770,404.20/338,513.78
  6. Step 6: Final answer
    x = 170,683.66

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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.