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Finding the Fourth Proportional to 407,830.80, 611,454.60 and 183,007.20

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Solution

The fourth proportional to 407,830.80, 611,454.60 and 183,007.20 is: 274,379.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,830.80 : 611,454.60 = 183,007.20 : x
  2. Step 2: Convert to fraction form
    407,830.80/611,454.60 = 183,007.20/x
  3. Step 3: Cross multiply
    407,830.80x = 611,454.60 × 183,007.20
  4. Step 4: Simplify right side
    407,830.80x = 111,900,594,273.12
  5. Step 5: Solve for x
    x = 111,900,594,273.12/407,830.80
  6. Step 6: Final answer
    x = 274,379.95

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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.