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Finding the Fourth Proportional to 316,367.67, 436,587.39 and 173,127.72

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Solution

The fourth proportional to 316,367.67, 436,587.39 and 173,127.72 is: 238,916.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,367.67 : 436,587.39 = 173,127.72 : x
  2. Step 2: Convert to fraction form
    316,367.67/436,587.39 = 173,127.72/x
  3. Step 3: Cross multiply
    316,367.67x = 436,587.39 × 173,127.72
  4. Step 4: Simplify right side
    316,367.67x = 75,585,379,411.45
  5. Step 5: Solve for x
    x = 75,585,379,411.45/316,367.67
  6. Step 6: Final answer
    x = 238,916.26

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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.