Home / 641,009.60-961,671.84-220,291.52

Finding the Fourth Proportional to 641,009.60, 961,671.84 and 220,291.52

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Solution

The fourth proportional to 641,009.60, 961,671.84 and 220,291.52 is: 330,491.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,009.60 : 961,671.84 = 220,291.52 : x
  2. Step 2: Convert to fraction form
    641,009.60/961,671.84 = 220,291.52/x
  3. Step 3: Cross multiply
    641,009.60x = 961,671.84 × 220,291.52
  4. Step 4: Simplify right side
    641,009.60x = 211,848,151,374.80
  5. Step 5: Solve for x
    x = 211,848,151,374.80/641,009.60
  6. Step 6: Final answer
    x = 330,491.39

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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.