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Finding the Fourth Proportional to 315,640.69, 435,606.40 and 179,674.70

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Solution

The fourth proportional to 315,640.69, 435,606.40 and 179,674.70 is: 247,963.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,640.69 : 435,606.40 = 179,674.70 : x
  2. Step 2: Convert to fraction form
    315,640.69/435,606.40 = 179,674.70/x
  3. Step 3: Cross multiply
    315,640.69x = 435,606.40 × 179,674.70
  4. Step 4: Simplify right side
    315,640.69x = 78,267,449,238.08
  5. Step 5: Solve for x
    x = 78,267,449,238.08/315,640.69
  6. Step 6: Final answer
    x = 247,963.75

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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.