Home / 420,365.27-580,118.07-229,389.14

Finding the Fourth Proportional to 420,365.27, 580,118.07 and 229,389.14

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Solution

The fourth proportional to 420,365.27, 580,118.07 and 229,389.14 is: 316,564.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,365.27 : 580,118.07 = 229,389.14 : x
  2. Step 2: Convert to fraction form
    420,365.27/580,118.07 = 229,389.14/x
  3. Step 3: Cross multiply
    420,365.27x = 580,118.07 × 229,389.14
  4. Step 4: Simplify right side
    420,365.27x = 133,072,782,275.17
  5. Step 5: Solve for x
    x = 133,072,782,275.17/420,365.27
  6. Step 6: Final answer
    x = 316,564.65

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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.