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Finding the Fourth Proportional to 366,926.80, 549,709.80 and 208,685.20

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Solution

The fourth proportional to 366,926.80, 549,709.80 and 208,685.20 is: 312,640.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,926.80 : 549,709.80 = 208,685.20 : x
  2. Step 2: Convert to fraction form
    366,926.80/549,709.80 = 208,685.20/x
  3. Step 3: Cross multiply
    366,926.80x = 549,709.80 × 208,685.20
  4. Step 4: Simplify right side
    366,926.80x = 114,716,299,554.96
  5. Step 5: Solve for x
    x = 114,716,299,554.96/366,926.80
  6. Step 6: Final answer
    x = 312,640.83

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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.