Home / 641,275.76-961,903.92-220,555.28

Finding the Fourth Proportional to 641,275.76, 961,903.92 and 220,555.28

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Solution

The fourth proportional to 641,275.76, 961,903.92 and 220,555.28 is: 330,829.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,275.76 : 961,903.92 = 220,555.28 : x
  2. Step 2: Convert to fraction form
    641,275.76/961,903.92 = 220,555.28/x
  3. Step 3: Cross multiply
    641,275.76x = 961,903.92 × 220,555.28
  4. Step 4: Simplify right side
    641,275.76x = 212,152,988,408.70
  5. Step 5: Solve for x
    x = 212,152,988,408.70/641,275.76
  6. Step 6: Final answer
    x = 330,829.58

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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.