Home / 309,681,442.95-427,142,812.60-203,801,123.85

Finding the Fourth Proportional to 309,681,442.95, 427,142,812.60 and 203,801,123.85

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Solution

The fourth proportional to 309,681,442.95, 427,142,812.60 and 203,801,123.85 is: 281,102,362.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,681,442.95 : 427,142,812.60 = 203,801,123.85 : x
  2. Step 2: Convert to fraction form
    309,681,442.95/427,142,812.60 = 203,801,123.85/x
  3. Step 3: Cross multiply
    309,681,442.95x = 427,142,812.60 × 203,801,123.85
  4. Step 4: Simplify right side
    309,681,442.95x = 87,052,185,252,329,936
  5. Step 5: Solve for x
    x = 87,052,185,252,329,936/309,681,442.95
  6. Step 6: Final answer
    x = 281,102,362.55

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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.