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Finding the Fourth Proportional to 366,939.80, 549,729.30 and 208,698.20

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Solution

The fourth proportional to 366,939.80, 549,729.30 and 208,698.20 is: 312,660.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,939.80 : 549,729.30 = 208,698.20 : x
  2. Step 2: Convert to fraction form
    366,939.80/549,729.30 = 208,698.20/x
  3. Step 3: Cross multiply
    366,939.80x = 549,729.30 × 208,698.20
  4. Step 4: Simplify right side
    366,939.80x = 114,727,515,397.26
  5. Step 5: Solve for x
    x = 114,727,515,397.26/366,939.80
  6. Step 6: Final answer
    x = 312,660.32

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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.