Home / 312,696,801.42-431,573,315.85-173,512,403.52

Finding the Fourth Proportional to 312,696,801.42, 431,573,315.85 and 173,512,403.52

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Solution

The fourth proportional to 312,696,801.42, 431,573,315.85 and 173,512,403.52 is: 239,475,821.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,696,801.42 : 431,573,315.85 = 173,512,403.52 : x
  2. Step 2: Convert to fraction form
    312,696,801.42/431,573,315.85 = 173,512,403.52/x
  3. Step 3: Cross multiply
    312,696,801.42x = 431,573,315.85 × 173,512,403.52
  4. Step 4: Simplify right side
    312,696,801.42x = 74,883,323,328,229,616
  5. Step 5: Solve for x
    x = 74,883,323,328,229,616/312,696,801.42
  6. Step 6: Final answer
    x = 239,475,821.27

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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.