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Finding the Fourth Proportional to 366,919.80, 549,699.30 and 208,678.20

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Solution

The fourth proportional to 366,919.80, 549,699.30 and 208,678.20 is: 312,630.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,919.80 : 549,699.30 = 208,678.20 : x
  2. Step 2: Convert to fraction form
    366,919.80/549,699.30 = 208,678.20/x
  3. Step 3: Cross multiply
    366,919.80x = 549,699.30 × 208,678.20
  4. Step 4: Simplify right side
    366,919.80x = 114,710,260,465.26
  5. Step 5: Solve for x
    x = 114,710,260,465.26/366,919.80
  6. Step 6: Final answer
    x = 312,630.34

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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.