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Finding the Fourth Proportional to 322,485.10, 483,727.65 and 85,851.70

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Solution

The fourth proportional to 322,485.10, 483,727.65 and 85,851.70 is: 128,777.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,485.10 : 483,727.65 = 85,851.70 : x
  2. Step 2: Convert to fraction form
    322,485.10/483,727.65 = 85,851.70/x
  3. Step 3: Cross multiply
    322,485.10x = 483,727.65 × 85,851.70
  4. Step 4: Simplify right side
    322,485.10x = 41,528,841,089.51
  5. Step 5: Solve for x
    x = 41,528,841,089.51/322,485.10
  6. Step 6: Final answer
    x = 128,777.55

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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.