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Finding the Fourth Proportional to 421,620.92, 581,824.46 and 230,630.20

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Solution

The fourth proportional to 421,620.92, 581,824.46 and 230,630.20 is: 318,262.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,620.92 : 581,824.46 = 230,630.20 : x
  2. Step 2: Convert to fraction form
    421,620.92/581,824.46 = 230,630.20/x
  3. Step 3: Cross multiply
    421,620.92x = 581,824.46 × 230,630.20
  4. Step 4: Simplify right side
    421,620.92x = 134,186,291,574.69
  5. Step 5: Solve for x
    x = 134,186,291,574.69/421,620.92
  6. Step 6: Final answer
    x = 318,262.89

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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.