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Finding the Fourth Proportional to 313,661.25, 432,856.46 and 170,423.69

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Solution

The fourth proportional to 313,661.25, 432,856.46 and 170,423.69 is: 235,186.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,661.25 : 432,856.46 = 170,423.69 : x
  2. Step 2: Convert to fraction form
    313,661.25/432,856.46 = 170,423.69/x
  3. Step 3: Cross multiply
    313,661.25x = 432,856.46 × 170,423.69
  4. Step 4: Simplify right side
    313,661.25x = 73,768,995,153.54
  5. Step 5: Solve for x
    x = 73,768,995,153.54/313,661.25
  6. Step 6: Final answer
    x = 235,186.83

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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.