Home / 279,936,666.40-419,904,999.60-142,187,159.20

Finding the Fourth Proportional to 279,936,666.40, 419,904,999.60 and 142,187,159.20

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Solution

The fourth proportional to 279,936,666.40, 419,904,999.60 and 142,187,159.20 is: 213,280,738.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,666.40 : 419,904,999.60 = 142,187,159.20 : x
  2. Step 2: Convert to fraction form
    279,936,666.40/419,904,999.60 = 142,187,159.20/x
  3. Step 3: Cross multiply
    279,936,666.40x = 419,904,999.60 × 142,187,159.20
  4. Step 4: Simplify right side
    279,936,666.40x = 59,705,099,027,001,136
  5. Step 5: Solve for x
    x = 59,705,099,027,001,136/279,936,666.40
  6. Step 6: Final answer
    x = 213,280,738.80

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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.