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Finding the Fourth Proportional to 285,044.66, 393,361.67 and 155,983.16

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Solution

The fourth proportional to 285,044.66, 393,361.67 and 155,983.16 is: 215,256.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,044.66 : 393,361.67 = 155,983.16 : x
  2. Step 2: Convert to fraction form
    285,044.66/393,361.67 = 155,983.16/x
  3. Step 3: Cross multiply
    285,044.66x = 393,361.67 × 155,983.16
  4. Step 4: Simplify right side
    285,044.66x = 61,357,797,682.84
  5. Step 5: Solve for x
    x = 61,357,797,682.84/285,044.66
  6. Step 6: Final answer
    x = 215,256.78

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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.