Home / 256,821.95-385,303.80-107,132.60

Finding the Fourth Proportional to 256,821.95, 385,303.80 and 107,132.60

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Solution

The fourth proportional to 256,821.95, 385,303.80 and 107,132.60 is: 160,728.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,821.95 : 385,303.80 = 107,132.60 : x
  2. Step 2: Convert to fraction form
    256,821.95/385,303.80 = 107,132.60/x
  3. Step 3: Cross multiply
    256,821.95x = 385,303.80 × 107,132.60
  4. Step 4: Simplify right side
    256,821.95x = 41,278,597,883.88
  5. Step 5: Solve for x
    x = 41,278,597,883.88/256,821.95
  6. Step 6: Final answer
    x = 160,728.47

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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.