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Finding the Fourth Proportional to 421,455.69, 581,608.59 and 230,469.08

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Solution

The fourth proportional to 421,455.69, 581,608.59 and 230,469.08 is: 318,047.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,455.69 : 581,608.59 = 230,469.08 : x
  2. Step 2: Convert to fraction form
    421,455.69/581,608.59 = 230,469.08/x
  3. Step 3: Cross multiply
    421,455.69x = 581,608.59 × 230,469.08
  4. Step 4: Simplify right side
    421,455.69x = 134,042,793,749.35
  5. Step 5: Solve for x
    x = 134,042,793,749.35/421,455.69
  6. Step 6: Final answer
    x = 318,047.18

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1.5x scale

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.