Home / 268,202.10-402,303.15-81,213.60

Finding the Fourth Proportional to 268,202.10, 402,303.15 and 81,213.60

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Solution

The fourth proportional to 268,202.10, 402,303.15 and 81,213.60 is: 121,820.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,202.10 : 402,303.15 = 81,213.60 : x
  2. Step 2: Convert to fraction form
    268,202.10/402,303.15 = 81,213.60/x
  3. Step 3: Cross multiply
    268,202.10x = 402,303.15 × 81,213.60
  4. Step 4: Simplify right side
    268,202.10x = 32,672,487,102.84
  5. Step 5: Solve for x
    x = 32,672,487,102.84/268,202.10
  6. Step 6: Final answer
    x = 121,820.40

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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.