Home / 389,583,144.25-537,641,638.91-215,742,888.25

Finding the Fourth Proportional to 389,583,144.25, 537,641,638.91 and 215,742,888.25

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Solution

The fourth proportional to 389,583,144.25, 537,641,638.91 and 215,742,888.25 is: 297,734,544.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,583,144.25 : 537,641,638.91 = 215,742,888.25 : x
  2. Step 2: Convert to fraction form
    389,583,144.25/537,641,638.91 = 215,742,888.25/x
  3. Step 3: Cross multiply
    389,583,144.25x = 537,641,638.91 × 215,742,888.25
  4. Step 4: Simplify right side
    389,583,144.25x = 115,992,360,021,906,976
  5. Step 5: Solve for x
    x = 115,992,360,021,906,976/389,583,144.25
  6. Step 6: Final answer
    x = 297,734,544.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.