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Finding the Fourth Proportional to 511,801.20, 767,701.80 and 245,424.60

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Solution

The fourth proportional to 511,801.20, 767,701.80 and 245,424.60 is: 368,136.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,801.20 : 767,701.80 = 245,424.60 : x
  2. Step 2: Convert to fraction form
    511,801.20/767,701.80 = 245,424.60/x
  3. Step 3: Cross multiply
    511,801.20x = 767,701.80 × 245,424.60
  4. Step 4: Simplify right side
    511,801.20x = 188,412,907,184.28
  5. Step 5: Solve for x
    x = 188,412,907,184.28/511,801.20
  6. Step 6: Final answer
    x = 368,136.90

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Double scale
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Similar ratio
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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.