Home / 256,436.40-384,615.68-90,185.52

Finding the Fourth Proportional to 256,436.40, 384,615.68 and 90,185.52

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Solution

The fourth proportional to 256,436.40, 384,615.68 and 90,185.52 is: 135,264.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,436.40 : 384,615.68 = 90,185.52 : x
  2. Step 2: Convert to fraction form
    256,436.40/384,615.68 = 90,185.52/x
  3. Step 3: Cross multiply
    256,436.40x = 384,615.68 × 90,185.52
  4. Step 4: Simplify right side
    256,436.40x = 34,686,765,100.95
  5. Step 5: Solve for x
    x = 34,686,765,100.95/256,436.40
  6. Step 6: Final answer
    x = 135,264.59

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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.