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Finding the Fourth Proportional to 508,757.21, 763,152.05 and 255,899.60

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Solution

The fourth proportional to 508,757.21, 763,152.05 and 255,899.60 is: 383,857.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,757.21 : 763,152.05 = 255,899.60 : x
  2. Step 2: Convert to fraction form
    508,757.21/763,152.05 = 255,899.60/x
  3. Step 3: Cross multiply
    508,757.21x = 763,152.05 × 255,899.60
  4. Step 4: Simplify right side
    508,757.21x = 195,290,304,334.18
  5. Step 5: Solve for x
    x = 195,290,304,334.18/508,757.21
  6. Step 6: Final answer
    x = 383,857.57

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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.