Home / 268,362.20-402,520.08-90,865.28

Finding the Fourth Proportional to 268,362.20, 402,520.08 and 90,865.28

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Solution

The fourth proportional to 268,362.20, 402,520.08 and 90,865.28 is: 136,290.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,362.20 : 402,520.08 = 90,865.28 : x
  2. Step 2: Convert to fraction form
    268,362.20/402,520.08 = 90,865.28/x
  3. Step 3: Cross multiply
    268,362.20x = 402,520.08 × 90,865.28
  4. Step 4: Simplify right side
    268,362.20x = 36,575,099,774.82
  5. Step 5: Solve for x
    x = 36,575,099,774.82/268,362.20
  6. Step 6: Final answer
    x = 136,290.06

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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.