Home / 268,220.58-402,080.73-90,603.37

Finding the Fourth Proportional to 268,220.58, 402,080.73 and 90,603.37

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Solution

The fourth proportional to 268,220.58, 402,080.73 and 90,603.37 is: 135,820.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,220.58 : 402,080.73 = 90,603.37 : x
  2. Step 2: Convert to fraction form
    268,220.58/402,080.73 = 90,603.37/x
  3. Step 3: Cross multiply
    268,220.58x = 402,080.73 × 90,603.37
  4. Step 4: Simplify right side
    268,220.58x = 36,429,869,150.06
  5. Step 5: Solve for x
    x = 36,429,869,150.06/268,220.58
  6. Step 6: Final answer
    x = 135,820.56

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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.