Home / 378,048.75-521,707.28-208,293.81

Finding the Fourth Proportional to 378,048.75, 521,707.28 and 208,293.81

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Solution

The fourth proportional to 378,048.75, 521,707.28 and 208,293.81 is: 287,445.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,048.75 : 521,707.28 = 208,293.81 : x
  2. Step 2: Convert to fraction form
    378,048.75/521,707.28 = 208,293.81/x
  3. Step 3: Cross multiply
    378,048.75x = 521,707.28 × 208,293.81
  4. Step 4: Simplify right side
    378,048.75x = 108,668,396,014.47
  5. Step 5: Solve for x
    x = 108,668,396,014.47/378,048.75
  6. Step 6: Final answer
    x = 287,445.46

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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.