Home / 389,583,147.25-537,641,643.06-215,742,891.25

Finding the Fourth Proportional to 389,583,147.25, 537,641,643.06 and 215,742,891.25

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Solution

The fourth proportional to 389,583,147.25, 537,641,643.06 and 215,742,891.25 is: 297,734,548.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,583,147.25 : 537,641,643.06 = 215,742,891.25 : x
  2. Step 2: Convert to fraction form
    389,583,147.25/537,641,643.06 = 215,742,891.25/x
  3. Step 3: Cross multiply
    389,583,147.25x = 537,641,643.06 × 215,742,891.25
  4. Step 4: Simplify right side
    389,583,147.25x = 115,992,362,530,164,880
  5. Step 5: Solve for x
    x = 115,992,362,530,164,880/389,583,147.25
  6. Step 6: Final answer
    x = 297,734,548.71

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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.