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Finding the Fourth Proportional to 331,367.60, 497,051.40 and 121,012.40

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Solution

The fourth proportional to 331,367.60, 497,051.40 and 121,012.40 is: 181,518.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,367.60 : 497,051.40 = 121,012.40 : x
  2. Step 2: Convert to fraction form
    331,367.60/497,051.40 = 121,012.40/x
  3. Step 3: Cross multiply
    331,367.60x = 497,051.40 × 121,012.40
  4. Step 4: Simplify right side
    331,367.60x = 60,149,382,837.36
  5. Step 5: Solve for x
    x = 60,149,382,837.36/331,367.60
  6. Step 6: Final answer
    x = 181,518.60

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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.