Home / 420,140.37-579,793.35-229,153.17

Finding the Fourth Proportional to 420,140.37, 579,793.35 and 229,153.17

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Solution

The fourth proportional to 420,140.37, 579,793.35 and 229,153.17 is: 316,231.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,140.37 : 579,793.35 = 229,153.17 : x
  2. Step 2: Convert to fraction form
    420,140.37/579,793.35 = 229,153.17/x
  3. Step 3: Cross multiply
    420,140.37x = 579,793.35 × 229,153.17
  4. Step 4: Simplify right side
    420,140.37x = 132,861,484,097.42
  5. Step 5: Solve for x
    x = 132,861,484,097.42/420,140.37
  6. Step 6: Final answer
    x = 316,231.18

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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.