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Finding the Fourth Proportional to 251,699.99, 347,267.79 and 142,786.40

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Solution

The fourth proportional to 251,699.99, 347,267.79 and 142,786.40 is: 197,000.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,699.99 : 347,267.79 = 142,786.40 : x
  2. Step 2: Convert to fraction form
    251,699.99/347,267.79 = 142,786.40/x
  3. Step 3: Cross multiply
    251,699.99x = 347,267.79 × 142,786.40
  4. Step 4: Simplify right side
    251,699.99x = 49,585,115,833.72
  5. Step 5: Solve for x
    x = 49,585,115,833.72/251,699.99
  6. Step 6: Final answer
    x = 197,000.87

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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.