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Finding the Fourth Proportional to 315,245.26, 435,039.90 and 172,008.34

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Solution

The fourth proportional to 315,245.26, 435,039.90 and 172,008.34 is: 237,372.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,245.26 : 435,039.90 = 172,008.34 : x
  2. Step 2: Convert to fraction form
    315,245.26/435,039.90 = 172,008.34/x
  3. Step 3: Cross multiply
    315,245.26x = 435,039.90 × 172,008.34
  4. Step 4: Simplify right side
    315,245.26x = 74,830,491,032.77
  5. Step 5: Solve for x
    x = 74,830,491,032.77/315,245.26
  6. Step 6: Final answer
    x = 237,372.30

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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.