Home / 311,352.96-429,588-190,450.08

Finding the Fourth Proportional to 311,352.96, 429,588 and 190,450.08

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Solution

The fourth proportional to 311,352.96, 429,588 and 190,450.08 is: 262,772.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,352.96 : 429,588 = 190,450.08 : x
  2. Step 2: Convert to fraction form
    311,352.96/429,588 = 190,450.08/x
  3. Step 3: Cross multiply
    311,352.96x = 429,588 × 190,450.08
  4. Step 4: Simplify right side
    311,352.96x = 81,815,068,967.04
  5. Step 5: Solve for x
    x = 81,815,068,967.04/311,352.96
  6. Step 6: Final answer
    x = 262,772.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.