Home / 421,140.36-581,172.75-239,852.28

Finding the Fourth Proportional to 421,140.36, 581,172.75 and 239,852.28

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Solution

The fourth proportional to 421,140.36, 581,172.75 and 239,852.28 is: 330,995.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,140.36 : 581,172.75 = 239,852.28 : x
  2. Step 2: Convert to fraction form
    421,140.36/581,172.75 = 239,852.28/x
  3. Step 3: Cross multiply
    421,140.36x = 581,172.75 × 239,852.28
  4. Step 4: Simplify right side
    421,140.36x = 139,395,609,161.37
  5. Step 5: Solve for x
    x = 139,395,609,161.37/421,140.36
  6. Step 6: Final answer
    x = 330,995.61

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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.