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Finding the Fourth Proportional to 218,095.62, 300,970.53 and 122,603.10

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Solution

The fourth proportional to 218,095.62, 300,970.53 and 122,603.10 is: 169,191.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,095.62 : 300,970.53 = 122,603.10 : x
  2. Step 2: Convert to fraction form
    218,095.62/300,970.53 = 122,603.10/x
  3. Step 3: Cross multiply
    218,095.62x = 300,970.53 × 122,603.10
  4. Step 4: Simplify right side
    218,095.62x = 36,899,919,986.64
  5. Step 5: Solve for x
    x = 36,899,919,986.64/218,095.62
  6. Step 6: Final answer
    x = 169,191.48

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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.