Home / 282,701.82-390,135.94-155,380.80

Finding the Fourth Proportional to 282,701.82, 390,135.94 and 155,380.80

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Solution

The fourth proportional to 282,701.82, 390,135.94 and 155,380.80 is: 214,429.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,701.82 : 390,135.94 = 155,380.80 : x
  2. Step 2: Convert to fraction form
    282,701.82/390,135.94 = 155,380.80/x
  3. Step 3: Cross multiply
    282,701.82x = 390,135.94 × 155,380.80
  4. Step 4: Simplify right side
    282,701.82x = 60,619,634,465.95
  5. Step 5: Solve for x
    x = 60,619,634,465.95/282,701.82
  6. Step 6: Final answer
    x = 214,429.59

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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.