Home / 260,442,450.37-390,581,365.77-85,536,667.51

Finding the Fourth Proportional to 260,442,450.37, 390,581,365.77 and 85,536,667.51

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Solution

The fourth proportional to 260,442,450.37, 390,581,365.77 and 85,536,667.51 is: 128,277,968.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,442,450.37 : 390,581,365.77 = 85,536,667.51 : x
  2. Step 2: Convert to fraction form
    260,442,450.37/390,581,365.77 = 85,536,667.51/x
  3. Step 3: Cross multiply
    260,442,450.37x = 390,581,365.77 × 85,536,667.51
  4. Step 4: Simplify right side
    260,442,450.37x = 33,409,028,419,470,184
  5. Step 5: Solve for x
    x = 33,409,028,419,470,184/260,442,450.37
  6. Step 6: Final answer
    x = 128,277,968.40

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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.