Home / 420,910.55-580,869.02-229,927.07

Finding the Fourth Proportional to 420,910.55, 580,869.02 and 229,927.07

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Solution

The fourth proportional to 420,910.55, 580,869.02 and 229,927.07 is: 317,306.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,910.55 : 580,869.02 = 229,927.07 : x
  2. Step 2: Convert to fraction form
    420,910.55/580,869.02 = 229,927.07/x
  3. Step 3: Cross multiply
    420,910.55x = 580,869.02 × 229,927.07
  4. Step 4: Simplify right side
    420,910.55x = 133,557,510,672.74
  5. Step 5: Solve for x
    x = 133,557,510,672.74/420,910.55
  6. Step 6: Final answer
    x = 317,306.16

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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.