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Finding the Fourth Proportional to 351,570.28, 485,165.80 and 190,424.92

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Solution

The fourth proportional to 351,570.28, 485,165.80 and 190,424.92 is: 262,785.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,570.28 : 485,165.80 = 190,424.92 : x
  2. Step 2: Convert to fraction form
    351,570.28/485,165.80 = 190,424.92/x
  3. Step 3: Cross multiply
    351,570.28x = 485,165.80 × 190,424.92
  4. Step 4: Simplify right side
    351,570.28x = 92,387,658,651.74
  5. Step 5: Solve for x
    x = 92,387,658,651.74/351,570.28
  6. Step 6: Final answer
    x = 262,785.75

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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.