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Finding the Fourth Proportional to 316,414.64, 436,649.61 and 173,174.35

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Solution

The fourth proportional to 316,414.64, 436,649.61 and 173,174.35 is: 238,979.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,414.64 : 436,649.61 = 173,174.35 : x
  2. Step 2: Convert to fraction form
    316,414.64/436,649.61 = 173,174.35/x
  3. Step 3: Cross multiply
    316,414.64x = 436,649.61 × 173,174.35
  4. Step 4: Simplify right side
    316,414.64x = 75,616,512,389.50
  5. Step 5: Solve for x
    x = 75,616,512,389.50/316,414.64
  6. Step 6: Final answer
    x = 238,979.18

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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.