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Finding the Fourth Proportional to 282,636.72, 423,969.66 and 72,276.48

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Solution

The fourth proportional to 282,636.72, 423,969.66 and 72,276.48 is: 108,418.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,636.72 : 423,969.66 = 72,276.48 : x
  2. Step 2: Convert to fraction form
    282,636.72/423,969.66 = 72,276.48/x
  3. Step 3: Cross multiply
    282,636.72x = 423,969.66 × 72,276.48
  4. Step 4: Simplify right side
    282,636.72x = 30,643,034,651.60
  5. Step 5: Solve for x
    x = 30,643,034,651.60/282,636.72
  6. Step 6: Final answer
    x = 108,418.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.