Home / 282,815.16-390,286.38-155,498.95

Finding the Fourth Proportional to 282,815.16, 390,286.38 and 155,498.95

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Solution

The fourth proportional to 282,815.16, 390,286.38 and 155,498.95 is: 214,589.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,815.16 : 390,286.38 = 155,498.95 : x
  2. Step 2: Convert to fraction form
    282,815.16/390,286.38 = 155,498.95/x
  3. Step 3: Cross multiply
    282,815.16x = 390,286.38 × 155,498.95
  4. Step 4: Simplify right side
    282,815.16x = 60,689,122,289.30
  5. Step 5: Solve for x
    x = 60,689,122,289.30/282,815.16
  6. Step 6: Final answer
    x = 214,589.35

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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.