Home / 378,929.02-522,926.31-209,163.10

Finding the Fourth Proportional to 378,929.02, 522,926.31 and 209,163.10

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Solution

The fourth proportional to 378,929.02, 522,926.31 and 209,163.10 is: 288,647.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,929.02 : 522,926.31 = 209,163.10 : x
  2. Step 2: Convert to fraction form
    378,929.02/522,926.31 = 209,163.10/x
  3. Step 3: Cross multiply
    378,929.02x = 522,926.31 × 209,163.10
  4. Step 4: Simplify right side
    378,929.02x = 109,376,887,548.21
  5. Step 5: Solve for x
    x = 109,376,887,548.21/378,929.02
  6. Step 6: Final answer
    x = 288,647.43

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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.