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Finding the Fourth Proportional to 320,149.84, 480,307.79 and 170,266.89

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Solution

The fourth proportional to 320,149.84, 480,307.79 and 170,266.89 is: 255,444.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,149.84 : 480,307.79 = 170,266.89 : x
  2. Step 2: Convert to fraction form
    320,149.84/480,307.79 = 170,266.89/x
  3. Step 3: Cross multiply
    320,149.84x = 480,307.79 × 170,266.89
  4. Step 4: Simplify right side
    320,149.84x = 81,780,511,632.09
  5. Step 5: Solve for x
    x = 81,780,511,632.09/320,149.84
  6. Step 6: Final answer
    x = 255,444.49

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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.