Home / 282,330.10-389,616.20-155,013.90

Finding the Fourth Proportional to 282,330.10, 389,616.20 and 155,013.90

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Solution

The fourth proportional to 282,330.10, 389,616.20 and 155,013.90 is: 213,919.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,330.10 : 389,616.20 = 155,013.90 : x
  2. Step 2: Convert to fraction form
    282,330.10/389,616.20 = 155,013.90/x
  3. Step 3: Cross multiply
    282,330.10x = 389,616.20 × 155,013.90
  4. Step 4: Simplify right side
    282,330.10x = 60,395,926,665.18
  5. Step 5: Solve for x
    x = 60,395,926,665.18/282,330.10
  6. Step 6: Final answer
    x = 213,919.55

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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.