Home / 280,728,001.80-421,092,002.70-212,703,553.80

Finding the Fourth Proportional to 280,728,001.80, 421,092,002.70 and 212,703,553.80

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Solution

The fourth proportional to 280,728,001.80, 421,092,002.70 and 212,703,553.80 is: 319,055,330.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,728,001.80 : 421,092,002.70 = 212,703,553.80 : x
  2. Step 2: Convert to fraction form
    280,728,001.80/421,092,002.70 = 212,703,553.80/x
  3. Step 3: Cross multiply
    280,728,001.80x = 421,092,002.70 × 212,703,553.80
  4. Step 4: Simplify right side
    280,728,001.80x = 89,567,765,451,049,200
  5. Step 5: Solve for x
    x = 89,567,765,451,049,200/280,728,001.80
  6. Step 6: Final answer
    x = 319,055,330.70

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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.