Home / 279,936,038.90-419,904,058.35-85,877,405.30

Finding the Fourth Proportional to 279,936,038.90, 419,904,058.35 and 85,877,405.30

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Solution

The fourth proportional to 279,936,038.90, 419,904,058.35 and 85,877,405.30 is: 128,816,107.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,038.90 : 419,904,058.35 = 85,877,405.30 : x
  2. Step 2: Convert to fraction form
    279,936,038.90/419,904,058.35 = 85,877,405.30/x
  3. Step 3: Cross multiply
    279,936,038.90x = 419,904,058.35 × 85,877,405.30
  4. Step 4: Simplify right side
    279,936,038.90x = 36,060,271,006,037,800
  5. Step 5: Solve for x
    x = 36,060,271,006,037,800/279,936,038.90
  6. Step 6: Final answer
    x = 128,816,107.95

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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.