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Finding the Fourth Proportional to 210,054, 315,081 and 54,406

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Solution

The fourth proportional to 210,054, 315,081 and 54,406 is: 81,609

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,054 : 315,081 = 54,406 : x
  2. Step 2: Convert to fraction form
    210,054/315,081 = 54,406/x
  3. Step 3: Cross multiply
    210,054x = 315,081 × 54,406
  4. Step 4: Simplify right side
    210,054x = 17,142,296,886
  5. Step 5: Solve for x
    x = 17,142,296,886/210,054
  6. Step 6: Final answer
    x = 81,609

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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.