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Finding the Fourth Proportional to 421,365.96, 581,487.48 and 230,379.35

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Solution

The fourth proportional to 421,365.96, 581,487.48 and 230,379.35 is: 317,924.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,365.96 : 581,487.48 = 230,379.35 : x
  2. Step 2: Convert to fraction form
    421,365.96/581,487.48 = 230,379.35/x
  3. Step 3: Cross multiply
    421,365.96x = 581,487.48 × 230,379.35
  4. Step 4: Simplify right side
    421,365.96x = 133,962,704,768.10
  5. Step 5: Solve for x
    x = 133,962,704,768.10/421,365.96
  6. Step 6: Final answer
    x = 317,924.84

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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.