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Finding the Fourth Proportional to 398,142.60, 595,811.20 and 248,453.32

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Solution

The fourth proportional to 398,142.60, 595,811.20 and 248,453.32 is: 371,804.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,142.60 : 595,811.20 = 248,453.32 : x
  2. Step 2: Convert to fraction form
    398,142.60/595,811.20 = 248,453.32/x
  3. Step 3: Cross multiply
    398,142.60x = 595,811.20 × 248,453.32
  4. Step 4: Simplify right side
    398,142.60x = 148,031,270,733.18
  5. Step 5: Solve for x
    x = 148,031,270,733.18/398,142.60
  6. Step 6: Final answer
    x = 371,804.65

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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.