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Finding the Fourth Proportional to 258,347.60, 356,499.50 and 143,619.26

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Solution

The fourth proportional to 258,347.60, 356,499.50 and 143,619.26 is: 198,183.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,347.60 : 356,499.50 = 143,619.26 : x
  2. Step 2: Convert to fraction form
    258,347.60/356,499.50 = 143,619.26/x
  3. Step 3: Cross multiply
    258,347.60x = 356,499.50 × 143,619.26
  4. Step 4: Simplify right side
    258,347.60x = 51,200,192,926.83
  5. Step 5: Solve for x
    x = 51,200,192,926.83/258,347.60
  6. Step 6: Final answer
    x = 198,183.35

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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.