Home / 279,937,007.90-419,905,511.85-143,888,111.90

Finding the Fourth Proportional to 279,937,007.90, 419,905,511.85 and 143,888,111.90

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Solution

The fourth proportional to 279,937,007.90, 419,905,511.85 and 143,888,111.90 is: 215,832,167.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,937,007.90 : 419,905,511.85 = 143,888,111.90 : x
  2. Step 2: Convert to fraction form
    279,937,007.90/419,905,511.85 = 143,888,111.90/x
  3. Step 3: Cross multiply
    279,937,007.90x = 419,905,511.85 × 143,888,111.90
  4. Step 4: Simplify right side
    279,937,007.90x = 60,419,411,276,499,584
  5. Step 5: Solve for x
    x = 60,419,411,276,499,584/279,937,007.90
  6. Step 6: Final answer
    x = 215,832,167.85

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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.