Home / 331,138.51-496,781.58-120,776.45

Finding the Fourth Proportional to 331,138.51, 496,781.58 and 120,776.45

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Solution

The fourth proportional to 331,138.51, 496,781.58 and 120,776.45 is: 181,191.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,138.51 : 496,781.58 = 120,776.45 : x
  2. Step 2: Convert to fraction form
    331,138.51/496,781.58 = 120,776.45/x
  3. Step 3: Cross multiply
    331,138.51x = 496,781.58 × 120,776.45
  4. Step 4: Simplify right side
    331,138.51x = 59,999,515,036.81
  5. Step 5: Solve for x
    x = 59,999,515,036.81/331,138.51
  6. Step 6: Final answer
    x = 181,191.60

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1.5x scale

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.