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Finding the Fourth Proportional to 338,920.88, 507,903.45 and 187,186.37

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Solution

The fourth proportional to 338,920.88, 507,903.45 and 187,186.37 is: 280,515.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,920.88 : 507,903.45 = 187,186.37 : x
  2. Step 2: Convert to fraction form
    338,920.88/507,903.45 = 187,186.37/x
  3. Step 3: Cross multiply
    338,920.88x = 507,903.45 × 187,186.37
  4. Step 4: Simplify right side
    338,920.88x = 95,072,603,115.98
  5. Step 5: Solve for x
    x = 95,072,603,115.98/338,920.88
  6. Step 6: Final answer
    x = 280,515.63

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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.