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Finding the Fourth Proportional to 345,486.77, 476,517.96 and 228,989.56

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Solution

The fourth proportional to 345,486.77, 476,517.96 and 228,989.56 is: 315,837.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,486.77 : 476,517.96 = 228,989.56 : x
  2. Step 2: Convert to fraction form
    345,486.77/476,517.96 = 228,989.56/x
  3. Step 3: Cross multiply
    345,486.77x = 476,517.96 × 228,989.56
  4. Step 4: Simplify right side
    345,486.77x = 109,117,637,992.50
  5. Step 5: Solve for x
    x = 109,117,637,992.50/345,486.77
  6. Step 6: Final answer
    x = 315,837.39

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1.5x scale

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.