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Finding the Fourth Proportional to 351,455.89, 485,011.46 and 190,310.94

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Solution

The fourth proportional to 351,455.89, 485,011.46 and 190,310.94 is: 262,630.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,455.89 : 485,011.46 = 190,310.94 : x
  2. Step 2: Convert to fraction form
    351,455.89/485,011.46 = 190,310.94/x
  3. Step 3: Cross multiply
    351,455.89x = 485,011.46 × 190,310.94
  4. Step 4: Simplify right side
    351,455.89x = 92,302,984,831.16
  5. Step 5: Solve for x
    x = 92,302,984,831.16/351,455.89
  6. Step 6: Final answer
    x = 262,630.35

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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.