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Finding the Fourth Proportional to 375,080.90, 517,611.87 and 213,931.80

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Solution

The fourth proportional to 375,080.90, 517,611.87 and 213,931.80 is: 295,226.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,080.90 : 517,611.87 = 213,931.80 : x
  2. Step 2: Convert to fraction form
    375,080.90/517,611.87 = 213,931.80/x
  3. Step 3: Cross multiply
    375,080.90x = 517,611.87 × 213,931.80
  4. Step 4: Simplify right side
    375,080.90x = 110,733,639,050.47
  5. Step 5: Solve for x
    x = 110,733,639,050.47/375,080.90
  6. Step 6: Final answer
    x = 295,226.02

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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.