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Finding the Fourth Proportional to 303,428.40, 454,705.20 and 134,810.70

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Solution

The fourth proportional to 303,428.40, 454,705.20 and 134,810.70 is: 202,021.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,428.40 : 454,705.20 = 134,810.70 : x
  2. Step 2: Convert to fraction form
    303,428.40/454,705.20 = 134,810.70/x
  3. Step 3: Cross multiply
    303,428.40x = 454,705.20 × 134,810.70
  4. Step 4: Simplify right side
    303,428.40x = 61,299,126,305.64
  5. Step 5: Solve for x
    x = 61,299,126,305.64/303,428.40
  6. Step 6: Final answer
    x = 202,021.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.