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Finding the Fourth Proportional to 346,554, 478,245.96 and 187,578

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Solution

The fourth proportional to 346,554, 478,245.96 and 187,578 is: 258,858.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,554 : 478,245.96 = 187,578 : x
  2. Step 2: Convert to fraction form
    346,554/478,245.96 = 187,578/x
  3. Step 3: Cross multiply
    346,554x = 478,245.96 × 187,578
  4. Step 4: Simplify right side
    346,554x = 89,708,420,684.88
  5. Step 5: Solve for x
    x = 89,708,420,684.88/346,554
  6. Step 6: Final answer
    x = 258,858.42

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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.