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Finding the Fourth Proportional to 338,999.53, 508,443.67 and 125,717.37

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Solution

The fourth proportional to 338,999.53, 508,443.67 and 125,717.37 is: 188,555.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,999.53 : 508,443.67 = 125,717.37 : x
  2. Step 2: Convert to fraction form
    338,999.53/508,443.67 = 125,717.37/x
  3. Step 3: Cross multiply
    338,999.53x = 508,443.67 × 125,717.37
  4. Step 4: Simplify right side
    338,999.53x = 63,920,200,985.55
  5. Step 5: Solve for x
    x = 63,920,200,985.55/338,999.53
  6. Step 6: Final answer
    x = 188,555.43

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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.