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Finding the Fourth Proportional to 356,420.16, 491,859.81 and 195,281.31

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Solution

The fourth proportional to 356,420.16, 491,859.81 and 195,281.31 is: 269,488.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,420.16 : 491,859.81 = 195,281.31 : x
  2. Step 2: Convert to fraction form
    356,420.16/491,859.81 = 195,281.31/x
  3. Step 3: Cross multiply
    356,420.16x = 491,859.81 × 195,281.31
  4. Step 4: Simplify right side
    356,420.16x = 96,051,028,033.15
  5. Step 5: Solve for x
    x = 96,051,028,033.15/356,420.16
  6. Step 6: Final answer
    x = 269,488.20

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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.