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Finding the Fourth Proportional to 376,868.40, 565,124.40 and 219,145.20

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Solution

The fourth proportional to 376,868.40, 565,124.40 and 219,145.20 is: 328,614.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,868.40 : 565,124.40 = 219,145.20 : x
  2. Step 2: Convert to fraction form
    376,868.40/565,124.40 = 219,145.20/x
  3. Step 3: Cross multiply
    376,868.40x = 565,124.40 × 219,145.20
  4. Step 4: Simplify right side
    376,868.40x = 123,844,299,662.88
  5. Step 5: Solve for x
    x = 123,844,299,662.88/376,868.40
  6. Step 6: Final answer
    x = 328,614.18

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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.