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Finding the Fourth Proportional to 228,878.11, 315,817.68 and 130,754.17

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Solution

The fourth proportional to 228,878.11, 315,817.68 and 130,754.17 is: 180,421.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,878.11 : 315,817.68 = 130,754.17 : x
  2. Step 2: Convert to fraction form
    228,878.11/315,817.68 = 130,754.17/x
  3. Step 3: Cross multiply
    228,878.11x = 315,817.68 × 130,754.17
  4. Step 4: Simplify right side
    228,878.11x = 41,294,478,619.73
  5. Step 5: Solve for x
    x = 41,294,478,619.73/228,878.11
  6. Step 6: Final answer
    x = 180,421.27

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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.