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Finding the Fourth Proportional to 397,866.40, 549,062.60 and 216,583.52

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Solution

The fourth proportional to 397,866.40, 549,062.60 and 216,583.52 is: 298,889.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,866.40 : 549,062.60 = 216,583.52 : x
  2. Step 2: Convert to fraction form
    397,866.40/549,062.60 = 216,583.52/x
  3. Step 3: Cross multiply
    397,866.40x = 549,062.60 × 216,583.52
  4. Step 4: Simplify right side
    397,866.40x = 118,917,910,608.35
  5. Step 5: Solve for x
    x = 118,917,910,608.35/397,866.40
  6. Step 6: Final answer
    x = 298,889.05

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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.