Home / 380,987.99-525,769.47-208,921.61

Finding the Fourth Proportional to 380,987.99, 525,769.47 and 208,921.61

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Solution

The fourth proportional to 380,987.99, 525,769.47 and 208,921.61 is: 288,315.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,987.99 : 525,769.47 = 208,921.61 : x
  2. Step 2: Convert to fraction form
    380,987.99/525,769.47 = 208,921.61/x
  3. Step 3: Cross multiply
    380,987.99x = 525,769.47 × 208,921.61
  4. Step 4: Simplify right side
    380,987.99x = 109,844,604,161.25
  5. Step 5: Solve for x
    x = 109,844,604,161.25/380,987.99
  6. Step 6: Final answer
    x = 288,315.14

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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.