Home / 431,527.30-647,290.04-115,984.21

Finding the Fourth Proportional to 431,527.30, 647,290.04 and 115,984.21

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Solution

The fourth proportional to 431,527.30, 647,290.04 and 115,984.21 is: 173,976.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,527.30 : 647,290.04 = 115,984.21 : x
  2. Step 2: Convert to fraction form
    431,527.30/647,290.04 = 115,984.21/x
  3. Step 3: Cross multiply
    431,527.30x = 647,290.04 × 115,984.21
  4. Step 4: Simplify right side
    431,527.30x = 75,075,423,598.20
  5. Step 5: Solve for x
    x = 75,075,423,598.20/431,527.30
  6. Step 6: Final answer
    x = 173,976.07

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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.