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Finding the Fourth Proportional to 283,168.53, 390,772.35 and 155,844.23

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Solution

The fourth proportional to 283,168.53, 390,772.35 and 155,844.23 is: 215,064.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,168.53 : 390,772.35 = 155,844.23 : x
  2. Step 2: Convert to fraction form
    283,168.53/390,772.35 = 155,844.23/x
  3. Step 3: Cross multiply
    283,168.53x = 390,772.35 × 155,844.23
  4. Step 4: Simplify right side
    283,168.53x = 60,899,614,037.18
  5. Step 5: Solve for x
    x = 60,899,614,037.18/283,168.53
  6. Step 6: Final answer
    x = 215,064.91

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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.