Home / 260,442,453.88-390,581,371-85,536,671.04

Finding the Fourth Proportional to 260,442,453.88, 390,581,371 and 85,536,671.04

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Solution

The fourth proportional to 260,442,453.88, 390,581,371 and 85,536,671.04 is: 128,277,973.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,442,453.88 : 390,581,371 = 85,536,671.04 : x
  2. Step 2: Convert to fraction form
    260,442,453.88/390,581,371 = 85,536,671.04/x
  3. Step 3: Cross multiply
    260,442,453.88x = 390,581,371 × 85,536,671.04
  4. Step 4: Simplify right side
    260,442,453.88x = 33,409,030,245,579,200
  5. Step 5: Solve for x
    x = 33,409,030,245,579,200/260,442,453.88
  6. Step 6: Final answer
    x = 128,277,973.69

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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.