Home / 203,990,603.70-305,985,905.55-172,423,008.30

Finding the Fourth Proportional to 203,990,603.70, 305,985,905.55 and 172,423,008.30

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Solution

The fourth proportional to 203,990,603.70, 305,985,905.55 and 172,423,008.30 is: 258,634,512.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,990,603.70 : 305,985,905.55 = 172,423,008.30 : x
  2. Step 2: Convert to fraction form
    203,990,603.70/305,985,905.55 = 172,423,008.30/x
  3. Step 3: Cross multiply
    203,990,603.70x = 305,985,905.55 × 172,423,008.30
  4. Step 4: Simplify right side
    203,990,603.70x = 52,759,010,332,330,672
  5. Step 5: Solve for x
    x = 52,759,010,332,330,672/203,990,603.70
  6. Step 6: Final answer
    x = 258,634,512.45

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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.