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Finding the Fourth Proportional to 328,234.70, 492,344.85 and 91,570.70

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Solution

The fourth proportional to 328,234.70, 492,344.85 and 91,570.70 is: 137,354.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,234.70 : 492,344.85 = 91,570.70 : x
  2. Step 2: Convert to fraction form
    328,234.70/492,344.85 = 91,570.70/x
  3. Step 3: Cross multiply
    328,234.70x = 492,344.85 × 91,570.70
  4. Step 4: Simplify right side
    328,234.70x = 45,084,362,555.90
  5. Step 5: Solve for x
    x = 45,084,362,555.90/328,234.70
  6. Step 6: Final answer
    x = 137,354.04

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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.