Home / 282,976.12-390,498.88-155,651.72

Finding the Fourth Proportional to 282,976.12, 390,498.88 and 155,651.72

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Solution

The fourth proportional to 282,976.12, 390,498.88 and 155,651.72 is: 214,794.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,976.12 : 390,498.88 = 155,651.72 : x
  2. Step 2: Convert to fraction form
    282,976.12/390,498.88 = 155,651.72/x
  3. Step 3: Cross multiply
    282,976.12x = 390,498.88 × 155,651.72
  4. Step 4: Simplify right side
    282,976.12x = 60,781,822,330.07
  5. Step 5: Solve for x
    x = 60,781,822,330.07/282,976.12
  6. Step 6: Final answer
    x = 214,794.88

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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.