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Finding the Fourth Proportional to 303,385.52, 418,669.08 and 167,420.72

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Solution

The fourth proportional to 303,385.52, 418,669.08 and 167,420.72 is: 231,038.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,385.52 : 418,669.08 = 167,420.72 : x
  2. Step 2: Convert to fraction form
    303,385.52/418,669.08 = 167,420.72/x
  3. Step 3: Cross multiply
    303,385.52x = 418,669.08 × 167,420.72
  4. Step 4: Simplify right side
    303,385.52x = 70,093,878,815.34
  5. Step 5: Solve for x
    x = 70,093,878,815.34/303,385.52
  6. Step 6: Final answer
    x = 231,038.97

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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.