Home / 420,259.44-579,946.58-229,272.80

Finding the Fourth Proportional to 420,259.44, 579,946.58 and 229,272.80

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Solution

The fourth proportional to 420,259.44, 579,946.58 and 229,272.80 is: 316,390.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,259.44 : 579,946.58 = 229,272.80 : x
  2. Step 2: Convert to fraction form
    420,259.44/579,946.58 = 229,272.80/x
  3. Step 3: Cross multiply
    420,259.44x = 579,946.58 × 229,272.80
  4. Step 4: Simplify right side
    420,259.44x = 132,965,976,247.02
  5. Step 5: Solve for x
    x = 132,965,976,247.02/420,259.44
  6. Step 6: Final answer
    x = 316,390.22

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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.