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Finding the Fourth Proportional to 421,554.90, 581,759.67 and 230,568.30

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Solution

The fourth proportional to 421,554.90, 581,759.67 and 230,568.30 is: 318,191.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,554.90 : 581,759.67 = 230,568.30 : x
  2. Step 2: Convert to fraction form
    421,554.90/581,759.67 = 230,568.30/x
  3. Step 3: Cross multiply
    421,554.90x = 581,759.67 × 230,568.30
  4. Step 4: Simplify right side
    421,554.90x = 134,135,338,120.46
  5. Step 5: Solve for x
    x = 134,135,338,120.46/421,554.90
  6. Step 6: Final answer
    x = 318,191.86

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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.