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Finding the Fourth Proportional to 348,525.80, 522,788.70 and 208,212.20

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Solution

The fourth proportional to 348,525.80, 522,788.70 and 208,212.20 is: 312,318.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,525.80 : 522,788.70 = 208,212.20 : x
  2. Step 2: Convert to fraction form
    348,525.80/522,788.70 = 208,212.20/x
  3. Step 3: Cross multiply
    348,525.80x = 522,788.70 × 208,212.20
  4. Step 4: Simplify right side
    348,525.80x = 108,850,985,362.14
  5. Step 5: Solve for x
    x = 108,850,985,362.14/348,525.80
  6. Step 6: Final answer
    x = 312,318.30

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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.