Home / 287,867.88-431,698.08-121,668.84

Finding the Fourth Proportional to 287,867.88, 431,698.08 and 121,668.84

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Solution

The fourth proportional to 287,867.88, 431,698.08 and 121,668.84 is: 182,459.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,867.88 : 431,698.08 = 121,668.84 : x
  2. Step 2: Convert to fraction form
    287,867.88/431,698.08 = 121,668.84/x
  3. Step 3: Cross multiply
    287,867.88x = 431,698.08 × 121,668.84
  4. Step 4: Simplify right side
    287,867.88x = 52,524,204,623.83
  5. Step 5: Solve for x
    x = 52,524,204,623.83/287,867.88
  6. Step 6: Final answer
    x = 182,459.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.