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Finding the Fourth Proportional to 351,509.80, 485,077.53 and 190,363.54

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Solution

The fourth proportional to 351,509.80, 485,077.53 and 190,363.54 is: 262,698.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,509.80 : 485,077.53 = 190,363.54 : x
  2. Step 2: Convert to fraction form
    351,509.80/485,077.53 = 190,363.54/x
  3. Step 3: Cross multiply
    351,509.80x = 485,077.53 × 190,363.54
  4. Step 4: Simplify right side
    351,509.80x = 92,341,075,785.26
  5. Step 5: Solve for x
    x = 92,341,075,785.26/351,509.80
  6. Step 6: Final answer
    x = 262,698.44

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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.