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Finding the Fourth Proportional to 285,141.84, 393,469.08 and 170,397.71

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Solution

The fourth proportional to 285,141.84, 393,469.08 and 170,397.71 is: 235,132.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,141.84 : 393,469.08 = 170,397.71 : x
  2. Step 2: Convert to fraction form
    285,141.84/393,469.08 = 170,397.71/x
  3. Step 3: Cross multiply
    285,141.84x = 393,469.08 × 170,397.71
  4. Step 4: Simplify right side
    285,141.84x = 67,046,230,187.81
  5. Step 5: Solve for x
    x = 67,046,230,187.81/285,141.84
  6. Step 6: Final answer
    x = 235,132.91

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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.