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Finding the Fourth Proportional to 331,603.74, 497,036.25 and 131,870.70

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Solution

The fourth proportional to 331,603.74, 497,036.25 and 131,870.70 is: 197,659.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,603.74 : 497,036.25 = 131,870.70 : x
  2. Step 2: Convert to fraction form
    331,603.74/497,036.25 = 131,870.70/x
  3. Step 3: Cross multiply
    331,603.74x = 497,036.25 × 131,870.70
  4. Step 4: Simplify right side
    331,603.74x = 65,544,518,212.88
  5. Step 5: Solve for x
    x = 65,544,518,212.88/331,603.74
  6. Step 6: Final answer
    x = 197,659.16

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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.