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Finding the Fourth Proportional to 366,928.80, 549,712.80 and 208,687.20

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Solution

The fourth proportional to 366,928.80, 549,712.80 and 208,687.20 is: 312,643.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,928.80 : 549,712.80 = 208,687.20 : x
  2. Step 2: Convert to fraction form
    366,928.80/549,712.80 = 208,687.20/x
  3. Step 3: Cross multiply
    366,928.80x = 549,712.80 × 208,687.20
  4. Step 4: Simplify right side
    366,928.80x = 114,718,025,036.16
  5. Step 5: Solve for x
    x = 114,718,025,036.16/366,928.80
  6. Step 6: Final answer
    x = 312,643.83

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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.