Home / 420,920.55-580,883.12-229,946.24

Finding the Fourth Proportional to 420,920.55, 580,883.12 and 229,946.24

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Solution

The fourth proportional to 420,920.55, 580,883.12 and 229,946.24 is: 317,332.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,920.55 : 580,883.12 = 229,946.24 : x
  2. Step 2: Convert to fraction form
    420,920.55/580,883.12 = 229,946.24/x
  3. Step 3: Cross multiply
    420,920.55x = 580,883.12 × 229,946.24
  4. Step 4: Simplify right side
    420,920.55x = 133,571,889,323.47
  5. Step 5: Solve for x
    x = 133,571,889,323.47/420,920.55
  6. Step 6: Final answer
    x = 317,332.78

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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.