Home / 268,289.55-402,288.53-90,705.15

Finding the Fourth Proportional to 268,289.55, 402,288.53 and 90,705.15

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Solution

The fourth proportional to 268,289.55, 402,288.53 and 90,705.15 is: 136,008.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,289.55 : 402,288.53 = 90,705.15 : x
  2. Step 2: Convert to fraction form
    268,289.55/402,288.53 = 90,705.15/x
  3. Step 3: Cross multiply
    268,289.55x = 402,288.53 × 90,705.15
  4. Step 4: Simplify right side
    268,289.55x = 36,489,641,003.40
  5. Step 5: Solve for x
    x = 36,489,641,003.40/268,289.55
  6. Step 6: Final answer
    x = 136,008.43

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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.