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Finding the Fourth Proportional to 290,648.81, 401,132.95 and 163,324.42

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Solution

The fourth proportional to 290,648.81, 401,132.95 and 163,324.42 is: 225,408.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,648.81 : 401,132.95 = 163,324.42 : x
  2. Step 2: Convert to fraction form
    290,648.81/401,132.95 = 163,324.42/x
  3. Step 3: Cross multiply
    290,648.81x = 401,132.95 × 163,324.42
  4. Step 4: Simplify right side
    290,648.81x = 65,514,804,990.50
  5. Step 5: Solve for x
    x = 65,514,804,990.50/290,648.81
  6. Step 6: Final answer
    x = 225,408.82

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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.