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Finding the Fourth Proportional to 251,955.78, 347,706.94 and 137,237.87

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Solution

The fourth proportional to 251,955.78, 347,706.94 and 137,237.87 is: 189,392.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,955.78 : 347,706.94 = 137,237.87 : x
  2. Step 2: Convert to fraction form
    251,955.78/347,706.94 = 137,237.87/x
  3. Step 3: Cross multiply
    251,955.78x = 347,706.94 × 137,237.87
  4. Step 4: Simplify right side
    251,955.78x = 47,718,559,829.82
  5. Step 5: Solve for x
    x = 47,718,559,829.82/251,955.78
  6. Step 6: Final answer
    x = 189,392.60

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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.