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Finding the Fourth Proportional to 421,674.72, 581,909.04 and 230,684.64

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Solution

The fourth proportional to 421,674.72, 581,909.04 and 230,684.64 is: 318,343.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,674.72 : 581,909.04 = 230,684.64 : x
  2. Step 2: Convert to fraction form
    421,674.72/581,909.04 = 230,684.64/x
  3. Step 3: Cross multiply
    421,674.72x = 581,909.04 × 230,684.64
  4. Step 4: Simplify right side
    421,674.72x = 134,237,477,405.15
  5. Step 5: Solve for x
    x = 134,237,477,405.15/421,674.72
  6. Step 6: Final answer
    x = 318,343.67

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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.