Home / 290,972.13-401,545.20-163,647.72

Finding the Fourth Proportional to 290,972.13, 401,545.20 and 163,647.72

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Solution

The fourth proportional to 290,972.13, 401,545.20 and 163,647.72 is: 225,835.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,972.13 : 401,545.20 = 163,647.72 : x
  2. Step 2: Convert to fraction form
    290,972.13/401,545.20 = 163,647.72/x
  3. Step 3: Cross multiply
    290,972.13x = 401,545.20 × 163,647.72
  4. Step 4: Simplify right side
    290,972.13x = 65,711,956,456.94
  5. Step 5: Solve for x
    x = 65,711,956,456.94/290,972.13
  6. Step 6: Final answer
    x = 225,835.91

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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.