Home / 260,271,155.43-390,392,982.06-85,371,150.30

Finding the Fourth Proportional to 260,271,155.43, 390,392,982.06 and 85,371,150.30

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Solution

The fourth proportional to 260,271,155.43, 390,392,982.06 and 85,371,150.30 is: 128,052,214.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,271,155.43 : 390,392,982.06 = 85,371,150.30 : x
  2. Step 2: Convert to fraction form
    260,271,155.43/390,392,982.06 = 85,371,150.30/x
  3. Step 3: Cross multiply
    260,271,155.43x = 390,392,982.06 × 85,371,150.30
  4. Step 4: Simplify right side
    260,271,155.43x = 33,328,297,947,509,464
  5. Step 5: Solve for x
    x = 33,328,297,947,509,464/260,271,155.43
  6. Step 6: Final answer
    x = 128,052,214.98

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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.