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Finding the Fourth Proportional to 316,717.64, 436,904.71 and 195,820.28

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Solution

The fourth proportional to 316,717.64, 436,904.71 and 195,820.28 is: 270,129.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,717.64 : 436,904.71 = 195,820.28 : x
  2. Step 2: Convert to fraction form
    316,717.64/436,904.71 = 195,820.28/x
  3. Step 3: Cross multiply
    316,717.64x = 436,904.71 × 195,820.28
  4. Step 4: Simplify right side
    316,717.64x = 85,554,799,971.44
  5. Step 5: Solve for x
    x = 85,554,799,971.44/316,717.64
  6. Step 6: Final answer
    x = 270,129.57

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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.