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Finding the Fourth Proportional to 316,465.31, 436,705.36 and 173,197.64

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Solution

The fourth proportional to 316,465.31, 436,705.36 and 173,197.64 is: 239,003.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,465.31 : 436,705.36 = 173,197.64 : x
  2. Step 2: Convert to fraction form
    316,465.31/436,705.36 = 173,197.64/x
  3. Step 3: Cross multiply
    316,465.31x = 436,705.36 × 173,197.64
  4. Step 4: Simplify right side
    316,465.31x = 75,636,338,386.12
  5. Step 5: Solve for x
    x = 75,636,338,386.12/316,465.31
  6. Step 6: Final answer
    x = 239,003.57

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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.