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Finding the Fourth Proportional to 464,431.56, 640,922.90 and 260,527.80

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Solution

The fourth proportional to 464,431.56, 640,922.90 and 260,527.80 is: 359,532.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,431.56 : 640,922.90 = 260,527.80 : x
  2. Step 2: Convert to fraction form
    464,431.56/640,922.90 = 260,527.80/x
  3. Step 3: Cross multiply
    464,431.56x = 640,922.90 × 260,527.80
  4. Step 4: Simplify right side
    464,431.56x = 166,978,233,106.62
  5. Step 5: Solve for x
    x = 166,978,233,106.62/464,431.56
  6. Step 6: Final answer
    x = 359,532.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.