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Finding the Fourth Proportional to 240,015.35, 331,208.39 and 138,024.61

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Solution

The fourth proportional to 240,015.35, 331,208.39 and 138,024.61 is: 190,466.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,015.35 : 331,208.39 = 138,024.61 : x
  2. Step 2: Convert to fraction form
    240,015.35/331,208.39 = 138,024.61/x
  3. Step 3: Cross multiply
    240,015.35x = 331,208.39 × 138,024.61
  4. Step 4: Simplify right side
    240,015.35x = 45,714,908,375.52
  5. Step 5: Solve for x
    x = 45,714,908,375.52/240,015.35
  6. Step 6: Final answer
    x = 190,466.60

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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.