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Finding the Fourth Proportional to 398,768.00, 549,988.70 and 255,541.37

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Solution

The fourth proportional to 398,768.00, 549,988.70 and 255,541.37 is: 352,447.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,768.00 : 549,988.70 = 255,541.37 : x
  2. Step 2: Convert to fraction form
    398,768.00/549,988.70 = 255,541.37/x
  3. Step 3: Cross multiply
    398,768.00x = 549,988.70 × 255,541.37
  4. Step 4: Simplify right side
    398,768.00x = 140,544,867,896.34
  5. Step 5: Solve for x
    x = 140,544,867,896.34/398,768.00
  6. Step 6: Final answer
    x = 352,447.71

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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.