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Finding the Fourth Proportional to 328,035.60, 492,247.80 and 216,036.90

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Solution

The fourth proportional to 328,035.60, 492,247.80 and 216,036.90 is: 324,183.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,035.60 : 492,247.80 = 216,036.90 : x
  2. Step 2: Convert to fraction form
    328,035.60/492,247.80 = 216,036.90/x
  3. Step 3: Cross multiply
    328,035.60x = 492,247.80 × 216,036.90
  4. Step 4: Simplify right side
    328,035.60x = 106,343,688,743.82
  5. Step 5: Solve for x
    x = 106,343,688,743.82/328,035.60
  6. Step 6: Final answer
    x = 324,183.38

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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.