Home / 268,246.05-402,431.36-78,698.76

Finding the Fourth Proportional to 268,246.05, 402,431.36 and 78,698.76

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Solution

The fourth proportional to 268,246.05, 402,431.36 and 78,698.76 is: 118,066.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,246.05 : 402,431.36 = 78,698.76 : x
  2. Step 2: Convert to fraction form
    268,246.05/402,431.36 = 78,698.76/x
  3. Step 3: Cross multiply
    268,246.05x = 402,431.36 × 78,698.76
  4. Step 4: Simplify right side
    268,246.05x = 31,670,847,114.50
  5. Step 5: Solve for x
    x = 31,670,847,114.50/268,246.05
  6. Step 6: Final answer
    x = 118,066.41

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1.5x scale

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.