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Finding the Fourth Proportional to 339,566.80, 509,220.60 and 102,830.80

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Solution

The fourth proportional to 339,566.80, 509,220.60 and 102,830.80 is: 154,206.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,566.80 : 509,220.60 = 102,830.80 : x
  2. Step 2: Convert to fraction form
    339,566.80/509,220.60 = 102,830.80/x
  3. Step 3: Cross multiply
    339,566.80x = 509,220.60 × 102,830.80
  4. Step 4: Simplify right side
    339,566.80x = 52,363,561,674.48
  5. Step 5: Solve for x
    x = 52,363,561,674.48/339,566.80
  6. Step 6: Final answer
    x = 154,206.95

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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.