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Finding the Fourth Proportional to 379,884.32, 524,266.44 and 218,781.80

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Solution

The fourth proportional to 379,884.32, 524,266.44 and 218,781.80 is: 301,933.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,884.32 : 524,266.44 = 218,781.80 : x
  2. Step 2: Convert to fraction form
    379,884.32/524,266.44 = 218,781.80/x
  3. Step 3: Cross multiply
    379,884.32x = 524,266.44 × 218,781.80
  4. Step 4: Simplify right side
    379,884.32x = 114,699,955,422.79
  5. Step 5: Solve for x
    x = 114,699,955,422.79/379,884.32
  6. Step 6: Final answer
    x = 301,933.90

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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.