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Finding the Fourth Proportional to 351,491.80, 485,057.93 and 190,346.35

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Solution

The fourth proportional to 351,491.80, 485,057.93 and 190,346.35 is: 262,677.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,491.80 : 485,057.93 = 190,346.35 : x
  2. Step 2: Convert to fraction form
    351,491.80/485,057.93 = 190,346.35/x
  3. Step 3: Cross multiply
    351,491.80x = 485,057.93 × 190,346.35
  4. Step 4: Simplify right side
    351,491.80x = 92,329,004,088.77
  5. Step 5: Solve for x
    x = 92,329,004,088.77/351,491.80
  6. Step 6: Final answer
    x = 262,677.55

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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.