Home / 431,938.02-647,907.10-221,441.70

Finding the Fourth Proportional to 431,938.02, 647,907.10 and 221,441.70

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Solution

The fourth proportional to 431,938.02, 647,907.10 and 221,441.70 is: 332,162.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,938.02 : 647,907.10 = 221,441.70 : x
  2. Step 2: Convert to fraction form
    431,938.02/647,907.10 = 221,441.70/x
  3. Step 3: Cross multiply
    431,938.02x = 647,907.10 × 221,441.70
  4. Step 4: Simplify right side
    431,938.02x = 143,473,649,666.07
  5. Step 5: Solve for x
    x = 143,473,649,666.07/431,938.02
  6. Step 6: Final answer
    x = 332,162.59

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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.