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Finding the Fourth Proportional to 605,436.80, 908,155.20 and 251,142.80

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Solution

The fourth proportional to 605,436.80, 908,155.20 and 251,142.80 is: 376,714.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,436.80 : 908,155.20 = 251,142.80 : x
  2. Step 2: Convert to fraction form
    605,436.80/908,155.20 = 251,142.80/x
  3. Step 3: Cross multiply
    605,436.80x = 908,155.20 × 251,142.80
  4. Step 4: Simplify right side
    605,436.80x = 228,076,639,762.56
  5. Step 5: Solve for x
    x = 228,076,639,762.56/605,436.80
  6. Step 6: Final answer
    x = 376,714.20

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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.