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Finding the Fourth Proportional to 339,290.40, 508,935.60 and 305,464.80

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Solution

The fourth proportional to 339,290.40, 508,935.60 and 305,464.80 is: 458,197.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,290.40 : 508,935.60 = 305,464.80 : x
  2. Step 2: Convert to fraction form
    339,290.40/508,935.60 = 305,464.80/x
  3. Step 3: Cross multiply
    339,290.40x = 508,935.60 × 305,464.80
  4. Step 4: Simplify right side
    339,290.40x = 155,461,911,266.88
  5. Step 5: Solve for x
    x = 155,461,911,266.88/339,290.40
  6. Step 6: Final answer
    x = 458,197.20

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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.