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Finding the Fourth Proportional to 385,309.80, 577,964.70 and 323,101.80

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Solution

The fourth proportional to 385,309.80, 577,964.70 and 323,101.80 is: 484,652.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,309.80 : 577,964.70 = 323,101.80 : x
  2. Step 2: Convert to fraction form
    385,309.80/577,964.70 = 323,101.80/x
  3. Step 3: Cross multiply
    385,309.80x = 577,964.70 × 323,101.80
  4. Step 4: Simplify right side
    385,309.80x = 186,741,434,906.46
  5. Step 5: Solve for x
    x = 186,741,434,906.46/385,309.80
  6. Step 6: Final answer
    x = 484,652.70

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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.