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Finding the Fourth Proportional to 509,939.80, 765,201.30 and 352,281.40

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Solution

The fourth proportional to 509,939.80, 765,201.30 and 352,281.40 is: 528,623.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,939.80 : 765,201.30 = 352,281.40 : x
  2. Step 2: Convert to fraction form
    509,939.80/765,201.30 = 352,281.40/x
  3. Step 3: Cross multiply
    509,939.80x = 765,201.30 × 352,281.40
  4. Step 4: Simplify right side
    509,939.80x = 269,566,185,245.82
  5. Step 5: Solve for x
    x = 269,566,185,245.82/509,939.80
  6. Step 6: Final answer
    x = 528,623.55

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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.