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Finding the Fourth Proportional to 283,077.68, 424,639.65 and 80,689.37

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Solution

The fourth proportional to 283,077.68, 424,639.65 and 80,689.37 is: 121,040.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,077.68 : 424,639.65 = 80,689.37 : x
  2. Step 2: Convert to fraction form
    283,077.68/424,639.65 = 80,689.37/x
  3. Step 3: Cross multiply
    283,077.68x = 424,639.65 × 80,689.37
  4. Step 4: Simplify right side
    283,077.68x = 34,263,905,835.52
  5. Step 5: Solve for x
    x = 34,263,905,835.52/283,077.68
  6. Step 6: Final answer
    x = 121,040.65

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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.