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Finding the Fourth Proportional to 385,144.80, 531,633.44 and 264,684.84

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Solution

The fourth proportional to 385,144.80, 531,633.44 and 264,684.84 is: 365,356.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,144.80 : 531,633.44 = 264,684.84 : x
  2. Step 2: Convert to fraction form
    385,144.80/531,633.44 = 264,684.84/x
  3. Step 3: Cross multiply
    385,144.80x = 531,633.44 × 264,684.84
  4. Step 4: Simplify right side
    385,144.80x = 140,715,312,005.05
  5. Step 5: Solve for x
    x = 140,715,312,005.05/385,144.80
  6. Step 6: Final answer
    x = 365,356.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.