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Finding the Fourth Proportional to 258,181.99, 356,290.29 and 143,460.16

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Solution

The fourth proportional to 258,181.99, 356,290.29 and 143,460.16 is: 197,974.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,181.99 : 356,290.29 = 143,460.16 : x
  2. Step 2: Convert to fraction form
    258,181.99/356,290.29 = 143,460.16/x
  3. Step 3: Cross multiply
    258,181.99x = 356,290.29 × 143,460.16
  4. Step 4: Simplify right side
    258,181.99x = 51,113,462,009.85
  5. Step 5: Solve for x
    x = 51,113,462,009.85/258,181.99
  6. Step 6: Final answer
    x = 197,974.55

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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.