Home / 263,678.40-395,477.10-86,186.34

Finding the Fourth Proportional to 263,678.40, 395,477.10 and 86,186.34

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Solution

The fourth proportional to 263,678.40, 395,477.10 and 86,186.34 is: 129,266.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,678.40 : 395,477.10 = 86,186.34 : x
  2. Step 2: Convert to fraction form
    263,678.40/395,477.10 = 86,186.34/x
  3. Step 3: Cross multiply
    263,678.40x = 395,477.10 × 86,186.34
  4. Step 4: Simplify right side
    263,678.40x = 34,084,723,802.81
  5. Step 5: Solve for x
    x = 34,084,723,802.81/263,678.40
  6. Step 6: Final answer
    x = 129,266.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.