Home / 256,608,270.30-384,912,405.45-120,307,431.90

Finding the Fourth Proportional to 256,608,270.30, 384,912,405.45 and 120,307,431.90

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Solution

The fourth proportional to 256,608,270.30, 384,912,405.45 and 120,307,431.90 is: 180,461,147.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,608,270.30 : 384,912,405.45 = 120,307,431.90 : x
  2. Step 2: Convert to fraction form
    256,608,270.30/384,912,405.45 = 120,307,431.90/x
  3. Step 3: Cross multiply
    256,608,270.30x = 384,912,405.45 × 120,307,431.90
  4. Step 4: Simplify right side
    256,608,270.30x = 46,307,823,006,141,064
  5. Step 5: Solve for x
    x = 46,307,823,006,141,064/256,608,270.30
  6. Step 6: Final answer
    x = 180,461,147.85

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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.