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Finding the Fourth Proportional to 351,971.60, 485,462.70 and 231,068.77

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Solution

The fourth proportional to 351,971.60, 485,462.70 and 231,068.77 is: 318,705.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,971.60 : 485,462.70 = 231,068.77 : x
  2. Step 2: Convert to fraction form
    351,971.60/485,462.70 = 231,068.77/x
  3. Step 3: Cross multiply
    351,971.60x = 485,462.70 × 231,068.77
  4. Step 4: Simplify right side
    351,971.60x = 112,175,267,756.22
  5. Step 5: Solve for x
    x = 112,175,267,756.22/351,971.60
  6. Step 6: Final answer
    x = 318,705.46

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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.