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Finding the Fourth Proportional to 660,372.42, 990,709.92 and 239,648.34

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Solution

The fourth proportional to 660,372.42, 990,709.92 and 239,648.34 is: 359,527.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,372.42 : 990,709.92 = 239,648.34 : x
  2. Step 2: Convert to fraction form
    660,372.42/990,709.92 = 239,648.34/x
  3. Step 3: Cross multiply
    660,372.42x = 990,709.92 × 239,648.34
  4. Step 4: Simplify right side
    660,372.42x = 237,421,987,749.53
  5. Step 5: Solve for x
    x = 237,421,987,749.53/660,372.42
  6. Step 6: Final answer
    x = 359,527.41

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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.