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Finding the Fourth Proportional to 228,607.58, 315,482.94 and 136,821.38

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Solution

The fourth proportional to 228,607.58, 315,482.94 and 136,821.38 is: 188,816.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,607.58 : 315,482.94 = 136,821.38 : x
  2. Step 2: Convert to fraction form
    228,607.58/315,482.94 = 136,821.38/x
  3. Step 3: Cross multiply
    228,607.58x = 315,482.94 × 136,821.38
  4. Step 4: Simplify right side
    228,607.58x = 43,164,811,217.26
  5. Step 5: Solve for x
    x = 43,164,811,217.26/228,607.58
  6. Step 6: Final answer
    x = 188,816.19

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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.