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Finding the Fourth Proportional to 378,707.00, 522,005.72 and 276,570.45

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Solution

The fourth proportional to 378,707.00, 522,005.72 and 276,570.45 is: 381,221.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,707.00 : 522,005.72 = 276,570.45 : x
  2. Step 2: Convert to fraction form
    378,707.00/522,005.72 = 276,570.45/x
  3. Step 3: Cross multiply
    378,707.00x = 522,005.72 × 276,570.45
  4. Step 4: Simplify right side
    378,707.00x = 144,371,355,500.12
  5. Step 5: Solve for x
    x = 144,371,355,500.12/378,707.00
  6. Step 6: Final answer
    x = 381,221.78

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1.5x scale

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.