Home / 641,639.60-962,545.80-221,044.40

Finding the Fourth Proportional to 641,639.60, 962,545.80 and 221,044.40

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Solution

The fourth proportional to 641,639.60, 962,545.80 and 221,044.40 is: 331,596.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,639.60 : 962,545.80 = 221,044.40 : x
  2. Step 2: Convert to fraction form
    641,639.60/962,545.80 = 221,044.40/x
  3. Step 3: Cross multiply
    641,639.60x = 962,545.80 × 221,044.40
  4. Step 4: Simplify right side
    641,639.60x = 212,765,358,833.52
  5. Step 5: Solve for x
    x = 212,765,358,833.52/641,639.60
  6. Step 6: Final answer
    x = 331,596.36

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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.