Home / 351,438.16-485,056.20-238,297.36

Finding the Fourth Proportional to 351,438.16, 485,056.20 and 238,297.36

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Solution

The fourth proportional to 351,438.16, 485,056.20 and 238,297.36 is: 328,898.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,438.16 : 485,056.20 = 238,297.36 : x
  2. Step 2: Convert to fraction form
    351,438.16/485,056.20 = 238,297.36/x
  3. Step 3: Cross multiply
    351,438.16x = 485,056.20 × 238,297.36
  4. Step 4: Simplify right side
    351,438.16x = 115,587,611,911.63
  5. Step 5: Solve for x
    x = 115,587,611,911.63/351,438.16
  6. Step 6: Final answer
    x = 328,898.86

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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.