Home / 421,140.45-581,172.53-230,153.84

Finding the Fourth Proportional to 421,140.45, 581,172.53 and 230,153.84

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Solution

The fourth proportional to 421,140.45, 581,172.53 and 230,153.84 is: 317,611.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,140.45 : 581,172.53 = 230,153.84 : x
  2. Step 2: Convert to fraction form
    421,140.45/581,172.53 = 230,153.84/x
  3. Step 3: Cross multiply
    421,140.45x = 581,172.53 × 230,153.84
  4. Step 4: Simplify right side
    421,140.45x = 133,759,087,604.78
  5. Step 5: Solve for x
    x = 133,759,087,604.78/421,140.45
  6. Step 6: Final answer
    x = 317,611.59

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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.