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Finding the Fourth Proportional to 285,299.62, 393,708.66 and 157,972.48

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Solution

The fourth proportional to 285,299.62, 393,708.66 and 157,972.48 is: 217,999.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,299.62 : 393,708.66 = 157,972.48 : x
  2. Step 2: Convert to fraction form
    285,299.62/393,708.66 = 157,972.48/x
  3. Step 3: Cross multiply
    285,299.62x = 393,708.66 × 157,972.48
  4. Step 4: Simplify right side
    285,299.62x = 62,195,133,417.68
  5. Step 5: Solve for x
    x = 62,195,133,417.68/285,299.62
  6. Step 6: Final answer
    x = 217,999.36

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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.