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Finding the Fourth Proportional to 303,455.64, 418,770 and 167,490.75

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Solution

The fourth proportional to 303,455.64, 418,770 and 167,490.75 is: 231,137.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,455.64 : 418,770 = 167,490.75 : x
  2. Step 2: Convert to fraction form
    303,455.64/418,770 = 167,490.75/x
  3. Step 3: Cross multiply
    303,455.64x = 418,770 × 167,490.75
  4. Step 4: Simplify right side
    303,455.64x = 70,140,101,377.50
  5. Step 5: Solve for x
    x = 70,140,101,377.50/303,455.64
  6. Step 6: Final answer
    x = 231,137.91

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1.5x scale

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.