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Finding the Fourth Proportional to 446,652,012.60, 669,978,261.90 and 139,968,127.80

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Solution

The fourth proportional to 446,652,012.60, 669,978,261.90 and 139,968,127.80 is: 209,952,267.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,652,012.60 : 669,978,261.90 = 139,968,127.80 : x
  2. Step 2: Convert to fraction form
    446,652,012.60/669,978,261.90 = 139,968,127.80/x
  3. Step 3: Cross multiply
    446,652,012.60x = 669,978,261.90 × 139,968,127.80
  4. Step 4: Simplify right side
    446,652,012.60x = 93,775,602,984,841,072
  5. Step 5: Solve for x
    x = 93,775,602,984,841,072/446,652,012.60
  6. Step 6: Final answer
    x = 209,952,267.85

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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.