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Finding the Fourth Proportional to 285,155.39, 393,612.81 and 164,344.94

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Solution

The fourth proportional to 285,155.39, 393,612.81 and 164,344.94 is: 226,852.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,155.39 : 393,612.81 = 164,344.94 : x
  2. Step 2: Convert to fraction form
    285,155.39/393,612.81 = 164,344.94/x
  3. Step 3: Cross multiply
    285,155.39x = 393,612.81 × 164,344.94
  4. Step 4: Simplify right side
    285,155.39x = 64,688,273,642.68
  5. Step 5: Solve for x
    x = 64,688,273,642.68/285,155.39
  6. Step 6: Final answer
    x = 226,852.71

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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.