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Finding the Fourth Proportional to 472,238.40, 708,357.60 and 191,956.80

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Solution

The fourth proportional to 472,238.40, 708,357.60 and 191,956.80 is: 287,935.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,238.40 : 708,357.60 = 191,956.80 : x
  2. Step 2: Convert to fraction form
    472,238.40/708,357.60 = 191,956.80/x
  3. Step 3: Cross multiply
    472,238.40x = 708,357.60 × 191,956.80
  4. Step 4: Simplify right side
    472,238.40x = 135,974,058,151.68
  5. Step 5: Solve for x
    x = 135,974,058,151.68/472,238.40
  6. Step 6: Final answer
    x = 287,935.20

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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.