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Finding the Fourth Proportional to 575,220.64, 862,273.68 and 219,961.12

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Solution

The fourth proportional to 575,220.64, 862,273.68 and 219,961.12 is: 329,728.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,220.64 : 862,273.68 = 219,961.12 : x
  2. Step 2: Convert to fraction form
    575,220.64/862,273.68 = 219,961.12/x
  3. Step 3: Cross multiply
    575,220.64x = 862,273.68 × 219,961.12
  4. Step 4: Simplify right side
    575,220.64x = 189,666,684,399.32
  5. Step 5: Solve for x
    x = 189,666,684,399.32/575,220.64
  6. Step 6: Final answer
    x = 329,728.58

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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.