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Finding the Fourth Proportional to 339,271.80, 508,907.70 and 191,815.80

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Solution

The fourth proportional to 339,271.80, 508,907.70 and 191,815.80 is: 287,723.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,271.80 : 508,907.70 = 191,815.80 : x
  2. Step 2: Convert to fraction form
    339,271.80/508,907.70 = 191,815.80/x
  3. Step 3: Cross multiply
    339,271.80x = 508,907.70 × 191,815.80
  4. Step 4: Simplify right side
    339,271.80x = 97,616,537,601.66
  5. Step 5: Solve for x
    x = 97,616,537,601.66/339,271.80
  6. Step 6: Final answer
    x = 287,723.70

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1.5x scale

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.