Home / 647,921.44-971,875.14-221,453.20

Finding the Fourth Proportional to 647,921.44, 971,875.14 and 221,453.20

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Solution

The fourth proportional to 647,921.44, 971,875.14 and 221,453.20 is: 332,177.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,921.44 : 971,875.14 = 221,453.20 : x
  2. Step 2: Convert to fraction form
    647,921.44/971,875.14 = 221,453.20/x
  3. Step 3: Cross multiply
    647,921.44x = 971,875.14 × 221,453.20
  4. Step 4: Simplify right side
    647,921.44x = 215,224,859,753.45
  5. Step 5: Solve for x
    x = 215,224,859,753.45/647,921.44
  6. Step 6: Final answer
    x = 332,177.40

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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.