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Finding the Fourth Proportional to 202,978.60, 304,467.90 and 62,780.20

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Solution

The fourth proportional to 202,978.60, 304,467.90 and 62,780.20 is: 94,170.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,978.60 : 304,467.90 = 62,780.20 : x
  2. Step 2: Convert to fraction form
    202,978.60/304,467.90 = 62,780.20/x
  3. Step 3: Cross multiply
    202,978.60x = 304,467.90 × 62,780.20
  4. Step 4: Simplify right side
    202,978.60x = 19,114,555,655.58
  5. Step 5: Solve for x
    x = 19,114,555,655.58/202,978.60
  6. Step 6: Final answer
    x = 94,170.30

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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.