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Finding the Fourth Proportional to 143,290, 214,935 and 55,738

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Solution

The fourth proportional to 143,290, 214,935 and 55,738 is: 83,607

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,290 : 214,935 = 55,738 : x
  2. Step 2: Convert to fraction form
    143,290/214,935 = 55,738/x
  3. Step 3: Cross multiply
    143,290x = 214,935 × 55,738
  4. Step 4: Simplify right side
    143,290x = 11,980,047,030
  5. Step 5: Solve for x
    x = 11,980,047,030/143,290
  6. Step 6: Final answer
    x = 83,607

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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.