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Finding the Fourth Proportional to 575,429.70, 862,415.55 and 219,969.30

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Solution

The fourth proportional to 575,429.70, 862,415.55 and 219,969.30 is: 329,675.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,429.70 : 862,415.55 = 219,969.30 : x
  2. Step 2: Convert to fraction form
    575,429.70/862,415.55 = 219,969.30/x
  3. Step 3: Cross multiply
    575,429.70x = 862,415.55 × 219,969.30
  4. Step 4: Simplify right side
    575,429.70x = 189,704,944,842.62
  5. Step 5: Solve for x
    x = 189,704,944,842.62/575,429.70
  6. Step 6: Final answer
    x = 329,675.28

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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.