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Finding the Fourth Proportional to 386,572.50, 533,703.33 and 252,669.78

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Solution

The fourth proportional to 386,572.50, 533,703.33 and 252,669.78 is: 348,836.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,572.50 : 533,703.33 = 252,669.78 : x
  2. Step 2: Convert to fraction form
    386,572.50/533,703.33 = 252,669.78/x
  3. Step 3: Cross multiply
    386,572.50x = 533,703.33 × 252,669.78
  4. Step 4: Simplify right side
    386,572.50x = 134,850,702,976.37
  5. Step 5: Solve for x
    x = 134,850,702,976.37/386,572.50
  6. Step 6: Final answer
    x = 348,836.77

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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.