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Finding the Fourth Proportional to 471,799, 707,818.38 and 139,375

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Solution

The fourth proportional to 471,799, 707,818.38 and 139,375 is: 209,097.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,799 : 707,818.38 = 139,375 : x
  2. Step 2: Convert to fraction form
    471,799/707,818.38 = 139,375/x
  3. Step 3: Cross multiply
    471,799x = 707,818.38 × 139,375
  4. Step 4: Simplify right side
    471,799x = 98,652,186,712.50
  5. Step 5: Solve for x
    x = 98,652,186,712.50/471,799
  6. Step 6: Final answer
    x = 209,097.91

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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.