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Finding the Fourth Proportional to 251,701.98, 347,270.54 and 142,788.40

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Solution

The fourth proportional to 251,701.98, 347,270.54 and 142,788.40 is: 197,003.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,701.98 : 347,270.54 = 142,788.40 : x
  2. Step 2: Convert to fraction form
    251,701.98/347,270.54 = 142,788.40/x
  3. Step 3: Cross multiply
    251,701.98x = 347,270.54 × 142,788.40
  4. Step 4: Simplify right side
    251,701.98x = 49,586,204,773.74
  5. Step 5: Solve for x
    x = 49,586,204,773.74/251,701.98
  6. Step 6: Final answer
    x = 197,003.63

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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.