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Finding the Fourth Proportional to 663,302.40, 994,710.60 and 214,141.20

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Solution

The fourth proportional to 663,302.40, 994,710.60 and 214,141.20 is: 321,133.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,302.40 : 994,710.60 = 214,141.20 : x
  2. Step 2: Convert to fraction form
    663,302.40/994,710.60 = 214,141.20/x
  3. Step 3: Cross multiply
    663,302.40x = 994,710.60 × 214,141.20
  4. Step 4: Simplify right side
    663,302.40x = 213,008,521,536.72
  5. Step 5: Solve for x
    x = 213,008,521,536.72/663,302.40
  6. Step 6: Final answer
    x = 321,133.35

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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.