Home / 420,253.46-579,938.28-229,266.80

Finding the Fourth Proportional to 420,253.46, 579,938.28 and 229,266.80

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Solution

The fourth proportional to 420,253.46, 579,938.28 and 229,266.80 is: 316,381.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,253.46 : 579,938.28 = 229,266.80 : x
  2. Step 2: Convert to fraction form
    420,253.46/579,938.28 = 229,266.80/x
  3. Step 3: Cross multiply
    420,253.46x = 579,938.28 × 229,266.80
  4. Step 4: Simplify right side
    420,253.46x = 132,960,593,653.10
  5. Step 5: Solve for x
    x = 132,960,593,653.10/420,253.46
  6. Step 6: Final answer
    x = 316,381.91

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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.