Home / 283,127.72-390,706.46-155,791.40

Finding the Fourth Proportional to 283,127.72, 390,706.46 and 155,791.40

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Solution

The fourth proportional to 283,127.72, 390,706.46 and 155,791.40 is: 214,986.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,127.72 : 390,706.46 = 155,791.40 : x
  2. Step 2: Convert to fraction form
    283,127.72/390,706.46 = 155,791.40/x
  3. Step 3: Cross multiply
    283,127.72x = 390,706.46 × 155,791.40
  4. Step 4: Simplify right side
    283,127.72x = 60,868,706,392.44
  5. Step 5: Solve for x
    x = 60,868,706,392.44/283,127.72
  6. Step 6: Final answer
    x = 214,986.74

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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.