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Finding the Fourth Proportional to 662,429.70, 993,810.15 and 213,192.90

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Solution

The fourth proportional to 662,429.70, 993,810.15 and 213,192.90 is: 319,842.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,429.70 : 993,810.15 = 213,192.90 : x
  2. Step 2: Convert to fraction form
    662,429.70/993,810.15 = 213,192.90/x
  3. Step 3: Cross multiply
    662,429.70x = 993,810.15 × 213,192.90
  4. Step 4: Simplify right side
    662,429.70x = 211,873,267,927.94
  5. Step 5: Solve for x
    x = 211,873,267,927.94/662,429.70
  6. Step 6: Final answer
    x = 319,842.65

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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.