Home / 402,976.68-556,085.85-221,659.34

Finding the Fourth Proportional to 402,976.68, 556,085.85 and 221,659.34

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Solution

The fourth proportional to 402,976.68, 556,085.85 and 221,659.34 is: 305,877.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,976.68 : 556,085.85 = 221,659.34 : x
  2. Step 2: Convert to fraction form
    402,976.68/556,085.85 = 221,659.34/x
  3. Step 3: Cross multiply
    402,976.68x = 556,085.85 × 221,659.34
  4. Step 4: Simplify right side
    402,976.68x = 123,261,619,713.91
  5. Step 5: Solve for x
    x = 123,261,619,713.91/402,976.68
  6. Step 6: Final answer
    x = 305,877.80

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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.