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Finding the Fourth Proportional to 248,524.80, 342,994.56 and 141,128.64

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Solution

The fourth proportional to 248,524.80, 342,994.56 and 141,128.64 is: 194,774.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,524.80 : 342,994.56 = 141,128.64 : x
  2. Step 2: Convert to fraction form
    248,524.80/342,994.56 = 141,128.64/x
  3. Step 3: Cross multiply
    248,524.80x = 342,994.56 × 141,128.64
  4. Step 4: Simplify right side
    248,524.80x = 48,406,355,780.20
  5. Step 5: Solve for x
    x = 48,406,355,780.20/248,524.80
  6. Step 6: Final answer
    x = 194,774.75

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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.