Home / 355,003,331.76-489,895,199.35-198,371,725.83

Finding the Fourth Proportional to 355,003,331.76, 489,895,199.35 and 198,371,725.83

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Solution

The fourth proportional to 355,003,331.76, 489,895,199.35 and 198,371,725.83 is: 273,747,729.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,003,331.76 : 489,895,199.35 = 198,371,725.83 : x
  2. Step 2: Convert to fraction form
    355,003,331.76/489,895,199.35 = 198,371,725.83/x
  3. Step 3: Cross multiply
    355,003,331.76x = 489,895,199.35 × 198,371,725.83
  4. Step 4: Simplify right side
    355,003,331.76x = 97,181,356,170,395,472
  5. Step 5: Solve for x
    x = 97,181,356,170,395,472/355,003,331.76
  6. Step 6: Final answer
    x = 273,747,729.88

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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.