Home / 311,412.33-429,749.00-168,172.36

Finding the Fourth Proportional to 311,412.33, 429,749.00 and 168,172.36

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Solution

The fourth proportional to 311,412.33, 429,749.00 and 168,172.36 is: 232,077.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,412.33 : 429,749.00 = 168,172.36 : x
  2. Step 2: Convert to fraction form
    311,412.33/429,749.00 = 168,172.36/x
  3. Step 3: Cross multiply
    311,412.33x = 429,749.00 × 168,172.36
  4. Step 4: Simplify right side
    311,412.33x = 72,271,905,032.44
  5. Step 5: Solve for x
    x = 72,271,905,032.44/311,412.33
  6. Step 6: Final answer
    x = 232,077.86

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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.