Home / 315,928.44-435,980.22-172,688.52

Finding the Fourth Proportional to 315,928.44, 435,980.22 and 172,688.52

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Solution

The fourth proportional to 315,928.44, 435,980.22 and 172,688.52 is: 238,309.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,928.44 : 435,980.22 = 172,688.52 : x
  2. Step 2: Convert to fraction form
    315,928.44/435,980.22 = 172,688.52/x
  3. Step 3: Cross multiply
    315,928.44x = 435,980.22 × 172,688.52
  4. Step 4: Simplify right side
    315,928.44x = 75,288,778,941.07
  5. Step 5: Solve for x
    x = 75,288,778,941.07/315,928.44
  6. Step 6: Final answer
    x = 238,309.60

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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.