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Finding the Fourth Proportional to 290,955.96, 401,291.25 and 199,129.56

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Solution

The fourth proportional to 290,955.96, 401,291.25 and 199,129.56 is: 274,642.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,955.96 : 401,291.25 = 199,129.56 : x
  2. Step 2: Convert to fraction form
    290,955.96/401,291.25 = 199,129.56/x
  3. Step 3: Cross multiply
    290,955.96x = 401,291.25 × 199,129.56
  4. Step 4: Simplify right side
    290,955.96x = 79,908,950,044.35
  5. Step 5: Solve for x
    x = 79,908,950,044.35/290,955.96
  6. Step 6: Final answer
    x = 274,642.77

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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.