Home / 221,345.55-331,518.78-155,081.43

Finding the Fourth Proportional to 221,345.55, 331,518.78 and 155,081.43

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Solution

The fourth proportional to 221,345.55, 331,518.78 and 155,081.43 is: 232,272.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,345.55 : 331,518.78 = 155,081.43 : x
  2. Step 2: Convert to fraction form
    221,345.55/331,518.78 = 155,081.43/x
  3. Step 3: Cross multiply
    221,345.55x = 331,518.78 × 155,081.43
  4. Step 4: Simplify right side
    221,345.55x = 51,412,406,474.26
  5. Step 5: Solve for x
    x = 51,412,406,474.26/221,345.55
  6. Step 6: Final answer
    x = 232,272.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.