Home / 315,680.22-435,621.99-172,438.26

Finding the Fourth Proportional to 315,680.22, 435,621.99 and 172,438.26

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Solution

The fourth proportional to 315,680.22, 435,621.99 and 172,438.26 is: 237,955.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,680.22 : 435,621.99 = 172,438.26 : x
  2. Step 2: Convert to fraction form
    315,680.22/435,621.99 = 172,438.26/x
  3. Step 3: Cross multiply
    315,680.22x = 435,621.99 × 172,438.26
  4. Step 4: Simplify right side
    315,680.22x = 75,117,897,973.34
  5. Step 5: Solve for x
    x = 75,117,897,973.34/315,680.22
  6. Step 6: Final answer
    x = 237,955.67

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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.