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Finding the Fourth Proportional to 328,299.65, 492,108.05 and 138,601.70

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Solution

The fourth proportional to 328,299.65, 492,108.05 and 138,601.70 is: 207,758.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,299.65 : 492,108.05 = 138,601.70 : x
  2. Step 2: Convert to fraction form
    328,299.65/492,108.05 = 138,601.70/x
  3. Step 3: Cross multiply
    328,299.65x = 492,108.05 × 138,601.70
  4. Step 4: Simplify right side
    328,299.65x = 68,207,012,313.69
  5. Step 5: Solve for x
    x = 68,207,012,313.69/328,299.65
  6. Step 6: Final answer
    x = 207,758.41

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1.5x scale

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.