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Finding the Fourth Proportional to 151,991.70, 228,000.51 and 39,686.82

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Solution

The fourth proportional to 151,991.70, 228,000.51 and 39,686.82 is: 59,533.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,991.70 : 228,000.51 = 39,686.82 : x
  2. Step 2: Convert to fraction form
    151,991.70/228,000.51 = 39,686.82/x
  3. Step 3: Cross multiply
    151,991.70x = 228,000.51 × 39,686.82
  4. Step 4: Simplify right side
    151,991.70x = 9,048,615,200.28
  5. Step 5: Solve for x
    x = 9,048,615,200.28/151,991.70
  6. Step 6: Final answer
    x = 59,533.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.