Home / 378,986.04-522,987.03-209,216.52

Finding the Fourth Proportional to 378,986.04, 522,987.03 and 209,216.52

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Solution

The fourth proportional to 378,986.04, 522,987.03 and 209,216.52 is: 288,711.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,986.04 : 522,987.03 = 209,216.52 : x
  2. Step 2: Convert to fraction form
    378,986.04/522,987.03 = 209,216.52/x
  3. Step 3: Cross multiply
    378,986.04x = 522,987.03 × 209,216.52
  4. Step 4: Simplify right side
    378,986.04x = 109,417,526,421.74
  5. Step 5: Solve for x
    x = 109,417,526,421.74/378,986.04
  6. Step 6: Final answer
    x = 288,711.23

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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.