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Finding the Fourth Proportional to 446,651,868.60, 669,978,045.90 and 139,967,983.80

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Solution

The fourth proportional to 446,651,868.60, 669,978,045.90 and 139,967,983.80 is: 209,952,051.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,651,868.60 : 669,978,045.90 = 139,967,983.80 : x
  2. Step 2: Convert to fraction form
    446,651,868.60/669,978,045.90 = 139,967,983.80/x
  3. Step 3: Cross multiply
    446,651,868.60x = 669,978,045.90 × 139,967,983.80
  4. Step 4: Simplify right side
    446,651,868.60x = 93,775,476,274,886,864
  5. Step 5: Solve for x
    x = 93,775,476,274,886,864/446,651,868.60
  6. Step 6: Final answer
    x = 209,952,051.85

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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.