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Finding the Fourth Proportional to 336,931.25, 505,967.31 and 225,328.64

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Solution

The fourth proportional to 336,931.25, 505,967.31 and 225,328.64 is: 338,374.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,931.25 : 505,967.31 = 225,328.64 : x
  2. Step 2: Convert to fraction form
    336,931.25/505,967.31 = 225,328.64/x
  3. Step 3: Cross multiply
    336,931.25x = 505,967.31 × 225,328.64
  4. Step 4: Simplify right side
    336,931.25x = 114,008,923,316.92
  5. Step 5: Solve for x
    x = 114,008,923,316.92/336,931.25
  6. Step 6: Final answer
    x = 338,374.45

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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.