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Finding the Fourth Proportional to 421,054.76, 581,055.72 and 227,462.54

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Solution

The fourth proportional to 421,054.76, 581,055.72 and 227,462.54 is: 313,898.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,054.76 : 581,055.72 = 227,462.54 : x
  2. Step 2: Convert to fraction form
    421,054.76/581,055.72 = 227,462.54/x
  3. Step 3: Cross multiply
    421,054.76x = 581,055.72 × 227,462.54
  4. Step 4: Simplify right side
    421,054.76x = 132,168,409,952.73
  5. Step 5: Solve for x
    x = 132,168,409,952.73/421,054.76
  6. Step 6: Final answer
    x = 313,898.39

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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.