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Finding the Fourth Proportional to 366,980.60, 550,470.90 and 278,407.10

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Solution

The fourth proportional to 366,980.60, 550,470.90 and 278,407.10 is: 417,610.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,980.60 : 550,470.90 = 278,407.10 : x
  2. Step 2: Convert to fraction form
    366,980.60/550,470.90 = 278,407.10/x
  3. Step 3: Cross multiply
    366,980.60x = 550,470.90 × 278,407.10
  4. Step 4: Simplify right side
    366,980.60x = 153,255,006,903.39
  5. Step 5: Solve for x
    x = 153,255,006,903.39/366,980.60
  6. Step 6: Final answer
    x = 417,610.65

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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.