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Finding the Fourth Proportional to 431,254.40, 646,881.60 and 262,601.60

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Solution

The fourth proportional to 431,254.40, 646,881.60 and 262,601.60 is: 393,902.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,254.40 : 646,881.60 = 262,601.60 : x
  2. Step 2: Convert to fraction form
    431,254.40/646,881.60 = 262,601.60/x
  3. Step 3: Cross multiply
    431,254.40x = 646,881.60 × 262,601.60
  4. Step 4: Simplify right side
    431,254.40x = 169,872,143,170.56
  5. Step 5: Solve for x
    x = 169,872,143,170.56/431,254.40
  6. Step 6: Final answer
    x = 393,902.40

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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.