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Finding the Fourth Proportional to 436,912.20, 655,368.30 and 170,681.40

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Solution

The fourth proportional to 436,912.20, 655,368.30 and 170,681.40 is: 256,022.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,912.20 : 655,368.30 = 170,681.40 : x
  2. Step 2: Convert to fraction form
    436,912.20/655,368.30 = 170,681.40/x
  3. Step 3: Cross multiply
    436,912.20x = 655,368.30 × 170,681.40
  4. Step 4: Simplify right side
    436,912.20x = 111,859,178,959.62
  5. Step 5: Solve for x
    x = 111,859,178,959.62/436,912.20
  6. Step 6: Final answer
    x = 256,022.10

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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.