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Finding the Fourth Proportional to 303,128.15, 418,314.30 and 167,167.76

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Solution

The fourth proportional to 303,128.15, 418,314.30 and 167,167.76 is: 230,690.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,128.15 : 418,314.30 = 167,167.76 : x
  2. Step 2: Convert to fraction form
    303,128.15/418,314.30 = 167,167.76/x
  3. Step 3: Cross multiply
    303,128.15x = 418,314.30 × 167,167.76
  4. Step 4: Simplify right side
    303,128.15x = 69,928,662,415.40
  5. Step 5: Solve for x
    x = 69,928,662,415.40/303,128.15
  6. Step 6: Final answer
    x = 230,690.10

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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.