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Finding the Fourth Proportional to 346,950, 478,791 and 187,974

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Solution

The fourth proportional to 346,950, 478,791 and 187,974 is: 259,404.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,950 : 478,791 = 187,974 : x
  2. Step 2: Convert to fraction form
    346,950/478,791 = 187,974/x
  3. Step 3: Cross multiply
    346,950x = 478,791 × 187,974
  4. Step 4: Simplify right side
    346,950x = 90,000,259,434
  5. Step 5: Solve for x
    x = 90,000,259,434/346,950
  6. Step 6: Final answer
    x = 259,404.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.