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Finding the Fourth Proportional to 328,427.36, 453,234.80 and 192,428.76

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Solution

The fourth proportional to 328,427.36, 453,234.80 and 192,428.76 is: 265,554.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,427.36 : 453,234.80 = 192,428.76 : x
  2. Step 2: Convert to fraction form
    328,427.36/453,234.80 = 192,428.76/x
  3. Step 3: Cross multiply
    328,427.36x = 453,234.80 × 192,428.76
  4. Step 4: Simplify right side
    328,427.36x = 87,215,410,552.85
  5. Step 5: Solve for x
    x = 87,215,410,552.85/328,427.36
  6. Step 6: Final answer
    x = 265,554.64

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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.