Home / 380,975.97-525,724.92-208,860.69

Finding the Fourth Proportional to 380,975.97, 525,724.92 and 208,860.69

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Solution

The fourth proportional to 380,975.97, 525,724.92 and 208,860.69 is: 288,215.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,975.97 : 525,724.92 = 208,860.69 : x
  2. Step 2: Convert to fraction form
    380,975.97/525,724.92 = 208,860.69/x
  3. Step 3: Cross multiply
    380,975.97x = 525,724.92 × 208,860.69
  4. Step 4: Simplify right side
    380,975.97x = 109,803,269,541.40
  5. Step 5: Solve for x
    x = 109,803,269,541.40/380,975.97
  6. Step 6: Final answer
    x = 288,215.74

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1.5x scale

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.