Home / 260,018,640.80-390,027,961.20-87,438,096.80

Finding the Fourth Proportional to 260,018,640.80, 390,027,961.20 and 87,438,096.80

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Solution

The fourth proportional to 260,018,640.80, 390,027,961.20 and 87,438,096.80 is: 131,157,145.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,018,640.80 : 390,027,961.20 = 87,438,096.80 : x
  2. Step 2: Convert to fraction form
    260,018,640.80/390,027,961.20 = 87,438,096.80/x
  3. Step 3: Cross multiply
    260,018,640.80x = 390,027,961.20 × 87,438,096.80
  4. Step 4: Simplify right side
    260,018,640.80x = 34,103,302,626,112,240
  5. Step 5: Solve for x
    x = 34,103,302,626,112,240/260,018,640.80
  6. Step 6: Final answer
    x = 131,157,145.20

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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.