Home / 432,037.80-647,538.30-221,567.40

Finding the Fourth Proportional to 432,037.80, 647,538.30 and 221,567.40

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Solution

The fourth proportional to 432,037.80, 647,538.30 and 221,567.40 is: 332,085.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,037.80 : 647,538.30 = 221,567.40 : x
  2. Step 2: Convert to fraction form
    432,037.80/647,538.30 = 221,567.40/x
  3. Step 3: Cross multiply
    432,037.80x = 647,538.30 × 221,567.40
  4. Step 4: Simplify right side
    432,037.80x = 143,473,377,531.42
  5. Step 5: Solve for x
    x = 143,473,377,531.42/432,037.80
  6. Step 6: Final answer
    x = 332,085.24

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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.