Home / 426,982.16-640,473.24-111,436.33

Finding the Fourth Proportional to 426,982.16, 640,473.24 and 111,436.33

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Solution

The fourth proportional to 426,982.16, 640,473.24 and 111,436.33 is: 167,154.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,982.16 : 640,473.24 = 111,436.33 : x
  2. Step 2: Convert to fraction form
    426,982.16/640,473.24 = 111,436.33/x
  3. Step 3: Cross multiply
    426,982.16x = 640,473.24 × 111,436.33
  4. Step 4: Simplify right side
    426,982.16x = 71,371,987,328.81
  5. Step 5: Solve for x
    x = 71,371,987,328.81/426,982.16
  6. Step 6: Final answer
    x = 167,154.50

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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.