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Finding the Fourth Proportional to 420,262.44, 579,950.72 and 229,275.80

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Solution

The fourth proportional to 420,262.44, 579,950.72 and 229,275.80 is: 316,394.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,262.44 : 579,950.72 = 229,275.80 : x
  2. Step 2: Convert to fraction form
    420,262.44/579,950.72 = 229,275.80/x
  3. Step 3: Cross multiply
    420,262.44x = 579,950.72 × 229,275.80
  4. Step 4: Simplify right side
    420,262.44x = 132,968,665,288.58
  5. Step 5: Solve for x
    x = 132,968,665,288.58/420,262.44
  6. Step 6: Final answer
    x = 316,394.36

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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.