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Finding the Fourth Proportional to 250,970.88, 346,337.28 and 137,790.72

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Solution

The fourth proportional to 250,970.88, 346,337.28 and 137,790.72 is: 190,149.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,970.88 : 346,337.28 = 137,790.72 : x
  2. Step 2: Convert to fraction form
    250,970.88/346,337.28 = 137,790.72/x
  3. Step 3: Cross multiply
    250,970.88x = 346,337.28 × 137,790.72
  4. Step 4: Simplify right side
    250,970.88x = 47,722,063,174.04
  5. Step 5: Solve for x
    x = 47,722,063,174.04/250,970.88
  6. Step 6: Final answer
    x = 190,149.80

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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.