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Finding the Fourth Proportional to 336,458.40, 504,007.20 and 209,709.60

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Solution

The fourth proportional to 336,458.40, 504,007.20 and 209,709.60 is: 314,140.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,458.40 : 504,007.20 = 209,709.60 : x
  2. Step 2: Convert to fraction form
    336,458.40/504,007.20 = 209,709.60/x
  3. Step 3: Cross multiply
    336,458.40x = 504,007.20 × 209,709.60
  4. Step 4: Simplify right side
    336,458.40x = 105,695,148,309.12
  5. Step 5: Solve for x
    x = 105,695,148,309.12/336,458.40
  6. Step 6: Final answer
    x = 314,140.32

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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.