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Finding the Fourth Proportional to 203,904, 305,856 and 56,160

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Solution

The fourth proportional to 203,904, 305,856 and 56,160 is: 84,240

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,904 : 305,856 = 56,160 : x
  2. Step 2: Convert to fraction form
    203,904/305,856 = 56,160/x
  3. Step 3: Cross multiply
    203,904x = 305,856 × 56,160
  4. Step 4: Simplify right side
    203,904x = 17,176,872,960
  5. Step 5: Solve for x
    x = 17,176,872,960/203,904
  6. Step 6: Final answer
    x = 84,240

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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.