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Finding the Fourth Proportional to 351,386.86, 484,894.20 and 198,415.12

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Solution

The fourth proportional to 351,386.86, 484,894.20 and 198,415.12 is: 273,801.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,386.86 : 484,894.20 = 198,415.12 : x
  2. Step 2: Convert to fraction form
    351,386.86/484,894.20 = 198,415.12/x
  3. Step 3: Cross multiply
    351,386.86x = 484,894.20 × 198,415.12
  4. Step 4: Simplify right side
    351,386.86x = 96,210,340,880.30
  5. Step 5: Solve for x
    x = 96,210,340,880.30/351,386.86
  6. Step 6: Final answer
    x = 273,801.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.