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Finding the Fourth Proportional to 351,515.57, 485,088.75 and 190,366.88

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Solution

The fourth proportional to 351,515.57, 485,088.75 and 190,366.88 is: 262,704.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,515.57 : 485,088.75 = 190,366.88 : x
  2. Step 2: Convert to fraction form
    351,515.57/485,088.75 = 190,366.88/x
  3. Step 3: Cross multiply
    351,515.57x = 485,088.75 × 190,366.88
  4. Step 4: Simplify right side
    351,515.57x = 92,344,829,435.16
  5. Step 5: Solve for x
    x = 92,344,829,435.16/351,515.57
  6. Step 6: Final answer
    x = 262,704.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.