Home / 205,448.40-308,464.20-126,716.40

Finding the Fourth Proportional to 205,448.40, 308,464.20 and 126,716.40

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Solution

The fourth proportional to 205,448.40, 308,464.20 and 126,716.40 is: 190,254.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,448.40 : 308,464.20 = 126,716.40 : x
  2. Step 2: Convert to fraction form
    205,448.40/308,464.20 = 126,716.40/x
  3. Step 3: Cross multiply
    205,448.40x = 308,464.20 × 126,716.40
  4. Step 4: Simplify right side
    205,448.40x = 39,087,472,952.88
  5. Step 5: Solve for x
    x = 39,087,472,952.88/205,448.40
  6. Step 6: Final answer
    x = 190,254.45

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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.