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Finding the Fourth Proportional to 355,451.60, 531,881.40 and 262,139.60

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Solution

The fourth proportional to 355,451.60, 531,881.40 and 262,139.60 is: 392,253.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,451.60 : 531,881.40 = 262,139.60 : x
  2. Step 2: Convert to fraction form
    355,451.60/531,881.40 = 262,139.60/x
  3. Step 3: Cross multiply
    355,451.60x = 531,881.40 × 262,139.60
  4. Step 4: Simplify right side
    355,451.60x = 139,427,177,443.44
  5. Step 5: Solve for x
    x = 139,427,177,443.44/355,451.60
  6. Step 6: Final answer
    x = 392,253.62

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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.