Home / 389,583,137-537,641,628.90-215,742,881

Finding the Fourth Proportional to 389,583,137, 537,641,628.90 and 215,742,881

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Solution

The fourth proportional to 389,583,137, 537,641,628.90 and 215,742,881 is: 297,734,534.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,583,137 : 537,641,628.90 = 215,742,881 : x
  2. Step 2: Convert to fraction form
    389,583,137/537,641,628.90 = 215,742,881/x
  3. Step 3: Cross multiply
    389,583,137x = 537,641,628.90 × 215,742,881
  4. Step 4: Simplify right side
    389,583,137x = 115,992,353,964,418,848
  5. Step 5: Solve for x
    x = 115,992,353,964,418,848/389,583,137
  6. Step 6: Final answer
    x = 297,734,534.55

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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.