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Finding the Fourth Proportional to 251,879.84, 347,589.20 and 137,159.89

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Solution

The fourth proportional to 251,879.84, 347,589.20 and 137,159.89 is: 189,277.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,879.84 : 347,589.20 = 137,159.89 : x
  2. Step 2: Convert to fraction form
    251,879.84/347,589.20 = 137,159.89/x
  3. Step 3: Cross multiply
    251,879.84x = 347,589.20 × 137,159.89
  4. Step 4: Simplify right side
    251,879.84x = 47,675,296,700.22
  5. Step 5: Solve for x
    x = 47,675,296,700.22/251,879.84
  6. Step 6: Final answer
    x = 189,277.94

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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.