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Finding the Fourth Proportional to 436,729.80, 655,440.30 and 170,617.80

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Solution

The fourth proportional to 436,729.80, 655,440.30 and 170,617.80 is: 256,061.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,729.80 : 655,440.30 = 170,617.80 : x
  2. Step 2: Convert to fraction form
    436,729.80/655,440.30 = 170,617.80/x
  3. Step 3: Cross multiply
    436,729.80x = 655,440.30 × 170,617.80
  4. Step 4: Simplify right side
    436,729.80x = 111,829,782,017.34
  5. Step 5: Solve for x
    x = 111,829,782,017.34/436,729.80
  6. Step 6: Final answer
    x = 256,061.72

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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.