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Finding the Fourth Proportional to 366,912.80, 549,688.80 and 208,671.20

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Solution

The fourth proportional to 366,912.80, 549,688.80 and 208,671.20 is: 312,619.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,912.80 : 549,688.80 = 208,671.20 : x
  2. Step 2: Convert to fraction form
    366,912.80/549,688.80 = 208,671.20/x
  3. Step 3: Cross multiply
    366,912.80x = 549,688.80 × 208,671.20
  4. Step 4: Simplify right side
    366,912.80x = 114,704,221,522.56
  5. Step 5: Solve for x
    x = 114,704,221,522.56/366,912.80
  6. Step 6: Final answer
    x = 312,619.84

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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.