Home / 421,580.89-581,769.30-230,590.18

Finding the Fourth Proportional to 421,580.89, 581,769.30 and 230,590.18

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Solution

The fourth proportional to 421,580.89, 581,769.30 and 230,590.18 is: 318,207.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,580.89 : 581,769.30 = 230,590.18 : x
  2. Step 2: Convert to fraction form
    421,580.89/581,769.30 = 230,590.18/x
  3. Step 3: Cross multiply
    421,580.89x = 581,769.30 × 230,590.18
  4. Step 4: Simplify right side
    421,580.89x = 134,150,287,605.47
  5. Step 5: Solve for x
    x = 134,150,287,605.47/421,580.89
  6. Step 6: Final answer
    x = 318,207.71

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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.