Home / 421,119.36-581,131.20-230,132.16

Finding the Fourth Proportional to 421,119.36, 581,131.20 and 230,132.16

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Solution

The fourth proportional to 421,119.36, 581,131.20 and 230,132.16 is: 317,574.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,119.36 : 581,131.20 = 230,132.16 : x
  2. Step 2: Convert to fraction form
    421,119.36/581,131.20 = 230,132.16/x
  3. Step 3: Cross multiply
    421,119.36x = 581,131.20 × 230,132.16
  4. Step 4: Simplify right side
    421,119.36x = 133,736,978,299.39
  5. Step 5: Solve for x
    x = 133,736,978,299.39/421,119.36
  6. Step 6: Final answer
    x = 317,574.99

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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.