Home / 218,756,893.80-328,082,852.70-126,440,999.40

Finding the Fourth Proportional to 218,756,893.80, 328,082,852.70 and 126,440,999.40

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Solution

The fourth proportional to 218,756,893.80, 328,082,852.70 and 126,440,999.40 is: 189,631,161.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,756,893.80 : 328,082,852.70 = 126,440,999.40 : x
  2. Step 2: Convert to fraction form
    218,756,893.80/328,082,852.70 = 126,440,999.40/x
  3. Step 3: Cross multiply
    218,756,893.80x = 328,082,852.70 × 126,440,999.40
  4. Step 4: Simplify right side
    218,756,893.80x = 41,483,123,781,390,992
  5. Step 5: Solve for x
    x = 41,483,123,781,390,992/218,756,893.80
  6. Step 6: Final answer
    x = 189,631,161.15

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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.