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Finding the Fourth Proportional to 315,580,912.80, 472,575,106.80 and 251,879,920.80

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Solution

The fourth proportional to 315,580,912.80, 472,575,106.80 and 251,879,920.80 is: 377,184,346.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,580,912.80 : 472,575,106.80 = 251,879,920.80 : x
  2. Step 2: Convert to fraction form
    315,580,912.80/472,575,106.80 = 251,879,920.80/x
  3. Step 3: Cross multiply
    315,580,912.80x = 472,575,106.80 × 251,879,920.80
  4. Step 4: Simplify right side
    315,580,912.80x = 119,032,180,472,835,552
  5. Step 5: Solve for x
    x = 119,032,180,472,835,552/315,580,912.80
  6. Step 6: Final answer
    x = 377,184,346.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.