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Finding the Fourth Proportional to 492,884.80, 739,672.80 and 212,603.20

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Solution

The fourth proportional to 492,884.80, 739,672.80 and 212,603.20 is: 319,053.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,884.80 : 739,672.80 = 212,603.20 : x
  2. Step 2: Convert to fraction form
    492,884.80/739,672.80 = 212,603.20/x
  3. Step 3: Cross multiply
    492,884.80x = 739,672.80 × 212,603.20
  4. Step 4: Simplify right side
    492,884.80x = 157,256,804,232.96
  5. Step 5: Solve for x
    x = 157,256,804,232.96/492,884.80
  6. Step 6: Final answer
    x = 319,053.87

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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.