Home / 268,738.80-402,719.40-118,856.40

Finding the Fourth Proportional to 268,738.80, 402,719.40 and 118,856.40

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Solution

The fourth proportional to 268,738.80, 402,719.40 and 118,856.40 is: 178,112.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,738.80 : 402,719.40 = 118,856.40 : x
  2. Step 2: Convert to fraction form
    268,738.80/402,719.40 = 118,856.40/x
  3. Step 3: Cross multiply
    268,738.80x = 402,719.40 × 118,856.40
  4. Step 4: Simplify right side
    268,738.80x = 47,865,778,094.16
  5. Step 5: Solve for x
    x = 47,865,778,094.16/268,738.80
  6. Step 6: Final answer
    x = 178,112.64

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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.