Home / 420,409.07-580,176.83-229,434.74

Finding the Fourth Proportional to 420,409.07, 580,176.83 and 229,434.74

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Solution

The fourth proportional to 420,409.07, 580,176.83 and 229,434.74 is: 316,626.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,409.07 : 580,176.83 = 229,434.74 : x
  2. Step 2: Convert to fraction form
    420,409.07/580,176.83 = 229,434.74/x
  3. Step 3: Cross multiply
    420,409.07x = 580,176.83 × 229,434.74
  4. Step 4: Simplify right side
    420,409.07x = 133,112,717,817.78
  5. Step 5: Solve for x
    x = 133,112,717,817.78/420,409.07
  6. Step 6: Final answer
    x = 316,626.66

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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.