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Finding the Fourth Proportional to 309,338.40, 464,007.60 and 211,034.40

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Solution

The fourth proportional to 309,338.40, 464,007.60 and 211,034.40 is: 316,551.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,338.40 : 464,007.60 = 211,034.40 : x
  2. Step 2: Convert to fraction form
    309,338.40/464,007.60 = 211,034.40/x
  3. Step 3: Cross multiply
    309,338.40x = 464,007.60 × 211,034.40
  4. Step 4: Simplify right side
    309,338.40x = 97,921,565,461.44
  5. Step 5: Solve for x
    x = 97,921,565,461.44/309,338.40
  6. Step 6: Final answer
    x = 316,551.60

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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.