Home / 278,832,416.72-384,786,611.54-153,381,918.18

Finding the Fourth Proportional to 278,832,416.72, 384,786,611.54 and 153,381,918.18

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Solution

The fourth proportional to 278,832,416.72, 384,786,611.54 and 153,381,918.18 is: 211,665,878.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,832,416.72 : 384,786,611.54 = 153,381,918.18 : x
  2. Step 2: Convert to fraction form
    278,832,416.72/384,786,611.54 = 153,381,918.18/x
  3. Step 3: Cross multiply
    278,832,416.72x = 384,786,611.54 × 153,381,918.18
  4. Step 4: Simplify right side
    278,832,416.72x = 59,019,308,567,936,912
  5. Step 5: Solve for x
    x = 59,019,308,567,936,912/278,832,416.72
  6. Step 6: Final answer
    x = 211,665,878.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.