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Finding the Fourth Proportional to 348,340.80, 522,511.20 and 208,027.20

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Solution

The fourth proportional to 348,340.80, 522,511.20 and 208,027.20 is: 312,040.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,340.80 : 522,511.20 = 208,027.20 : x
  2. Step 2: Convert to fraction form
    348,340.80/522,511.20 = 208,027.20/x
  3. Step 3: Cross multiply
    348,340.80x = 522,511.20 × 208,027.20
  4. Step 4: Simplify right side
    348,340.80x = 108,696,541,904.64
  5. Step 5: Solve for x
    x = 108,696,541,904.64/348,340.80
  6. Step 6: Final answer
    x = 312,040.80

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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.