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Finding the Fourth Proportional to 341,885.90, 512,551.38 and 142,355.56

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Solution

The fourth proportional to 341,885.90, 512,551.38 and 142,355.56 is: 213,417.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,885.90 : 512,551.38 = 142,355.56 : x
  2. Step 2: Convert to fraction form
    341,885.90/512,551.38 = 142,355.56/x
  3. Step 3: Cross multiply
    341,885.90x = 512,551.38 × 142,355.56
  4. Step 4: Simplify right side
    341,885.90x = 72,964,538,728.67
  5. Step 5: Solve for x
    x = 72,964,538,728.67/341,885.90
  6. Step 6: Final answer
    x = 213,417.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.