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Finding the Fourth Proportional to 282,879.30, 390,372.88 and 162,059.70

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Solution

The fourth proportional to 282,879.30, 390,372.88 and 162,059.70 is: 223,642.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,879.30 : 390,372.88 = 162,059.70 : x
  2. Step 2: Convert to fraction form
    282,879.30/390,372.88 = 162,059.70/x
  3. Step 3: Cross multiply
    282,879.30x = 390,372.88 × 162,059.70
  4. Step 4: Simplify right side
    282,879.30x = 63,263,711,820.94
  5. Step 5: Solve for x
    x = 63,263,711,820.94/282,879.30
  6. Step 6: Final answer
    x = 223,642.07

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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.