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Finding the Fourth Proportional to 493,273.40, 739,910.10 and 138,347.60

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Solution

The fourth proportional to 493,273.40, 739,910.10 and 138,347.60 is: 207,521.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,273.40 : 739,910.10 = 138,347.60 : x
  2. Step 2: Convert to fraction form
    493,273.40/739,910.10 = 138,347.60/x
  3. Step 3: Cross multiply
    493,273.40x = 739,910.10 × 138,347.60
  4. Step 4: Simplify right side
    493,273.40x = 102,364,786,550.76
  5. Step 5: Solve for x
    x = 102,364,786,550.76/493,273.40
  6. Step 6: Final answer
    x = 207,521.40

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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.