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Finding the Fourth Proportional to 309,808.16, 462,613.72 and 245,911.40

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Solution

The fourth proportional to 309,808.16, 462,613.72 and 245,911.40 is: 367,201.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,808.16 : 462,613.72 = 245,911.40 : x
  2. Step 2: Convert to fraction form
    309,808.16/462,613.72 = 245,911.40/x
  3. Step 3: Cross multiply
    309,808.16x = 462,613.72 × 245,911.40
  4. Step 4: Simplify right side
    309,808.16x = 113,761,987,544.41
  5. Step 5: Solve for x
    x = 113,761,987,544.41/309,808.16
  6. Step 6: Final answer
    x = 367,201.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.