Home / 432,005.80-647,490.30-221,535.40

Finding the Fourth Proportional to 432,005.80, 647,490.30 and 221,535.40

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Solution

The fourth proportional to 432,005.80, 647,490.30 and 221,535.40 is: 332,037.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,005.80 : 647,490.30 = 221,535.40 : x
  2. Step 2: Convert to fraction form
    432,005.80/647,490.30 = 221,535.40/x
  3. Step 3: Cross multiply
    432,005.80x = 647,490.30 × 221,535.40
  4. Step 4: Simplify right side
    432,005.80x = 143,442,022,606.62
  5. Step 5: Solve for x
    x = 143,442,022,606.62/432,005.80
  6. Step 6: Final answer
    x = 332,037.26

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1.5x scale

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.