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Finding the Fourth Proportional to 358,977.60, 538,466.40 and 274,996.80

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Solution

The fourth proportional to 358,977.60, 538,466.40 and 274,996.80 is: 412,495.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,977.60 : 538,466.40 = 274,996.80 : x
  2. Step 2: Convert to fraction form
    358,977.60/538,466.40 = 274,996.80/x
  3. Step 3: Cross multiply
    358,977.60x = 538,466.40 × 274,996.80
  4. Step 4: Simplify right side
    358,977.60x = 148,076,536,907.52
  5. Step 5: Solve for x
    x = 148,076,536,907.52/358,977.60
  6. Step 6: Final answer
    x = 412,495.20

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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.