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Finding the Fourth Proportional to 322,148.41, 483,185.08 and 85,509.48

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Solution

The fourth proportional to 322,148.41, 483,185.08 and 85,509.48 is: 128,254.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,148.41 : 483,185.08 = 85,509.48 : x
  2. Step 2: Convert to fraction form
    322,148.41/483,185.08 = 85,509.48/x
  3. Step 3: Cross multiply
    322,148.41x = 483,185.08 × 85,509.48
  4. Step 4: Simplify right side
    322,148.41x = 41,316,904,934.56
  5. Step 5: Solve for x
    x = 41,316,904,934.56/322,148.41
  6. Step 6: Final answer
    x = 128,254.26

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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.