Home / 689,424.95-1,034,137.72-216,147.21

Finding the Fourth Proportional to 689,424.95, 1,034,137.72 and 216,147.21

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Solution

The fourth proportional to 689,424.95, 1,034,137.72 and 216,147.21 is: 324,220.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,424.95 : 1,034,137.72 = 216,147.21 : x
  2. Step 2: Convert to fraction form
    689,424.95/1,034,137.72 = 216,147.21/x
  3. Step 3: Cross multiply
    689,424.95x = 1,034,137.72 × 216,147.21
  4. Step 4: Simplify right side
    689,424.95x = 223,525,983,203.95
  5. Step 5: Solve for x
    x = 223,525,983,203.95/689,424.95
  6. Step 6: Final answer
    x = 324,220.91

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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.