Home / 279,936,038.15-419,904,057.23-85,877,404.55

Finding the Fourth Proportional to 279,936,038.15, 419,904,057.23 and 85,877,404.55

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Solution

The fourth proportional to 279,936,038.15, 419,904,057.23 and 85,877,404.55 is: 128,816,106.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,038.15 : 419,904,057.23 = 85,877,404.55 : x
  2. Step 2: Convert to fraction form
    279,936,038.15/419,904,057.23 = 85,877,404.55/x
  3. Step 3: Cross multiply
    279,936,038.15x = 419,904,057.23 × 85,877,404.55
  4. Step 4: Simplify right side
    279,936,038.15x = 36,060,270,594,927,064
  5. Step 5: Solve for x
    x = 36,060,270,594,927,064/279,936,038.15
  6. Step 6: Final answer
    x = 128,816,106.83

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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.