Home / 315,749.43-435,733.70-172,509.44

Finding the Fourth Proportional to 315,749.43, 435,733.70 and 172,509.44

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Solution

The fourth proportional to 315,749.43, 435,733.70 and 172,509.44 is: 238,062.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,749.43 : 435,733.70 = 172,509.44 : x
  2. Step 2: Convert to fraction form
    315,749.43/435,733.70 = 172,509.44/x
  3. Step 3: Cross multiply
    315,749.43x = 435,733.70 × 172,509.44
  4. Step 4: Simplify right side
    315,749.43x = 75,168,173,534.91
  5. Step 5: Solve for x
    x = 75,168,173,534.91/315,749.43
  6. Step 6: Final answer
    x = 238,062.74

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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.