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Finding the Fourth Proportional to 313,661.92, 432,853.92 and 170,421.91

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Solution

The fourth proportional to 313,661.92, 432,853.92 and 170,421.91 is: 235,182.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,661.92 : 432,853.92 = 170,421.91 : x
  2. Step 2: Convert to fraction form
    313,661.92/432,853.92 = 170,421.91/x
  3. Step 3: Cross multiply
    313,661.92x = 432,853.92 × 170,421.91
  4. Step 4: Simplify right side
    313,661.92x = 73,767,791,797.39
  5. Step 5: Solve for x
    x = 73,767,791,797.39/313,661.92
  6. Step 6: Final answer
    x = 235,182.49

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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.