Home / 315,485.30-435,367.44-172,245.35

Finding the Fourth Proportional to 315,485.30, 435,367.44 and 172,245.35

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Solution

The fourth proportional to 315,485.30, 435,367.44 and 172,245.35 is: 237,697.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,485.30 : 435,367.44 = 172,245.35 : x
  2. Step 2: Convert to fraction form
    315,485.30/435,367.44 = 172,245.35/x
  3. Step 3: Cross multiply
    315,485.30x = 435,367.44 × 172,245.35
  4. Step 4: Simplify right side
    315,485.30x = 74,990,017,081.40
  5. Step 5: Solve for x
    x = 74,990,017,081.40/315,485.30
  6. Step 6: Final answer
    x = 237,697.34

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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.