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Finding the Fourth Proportional to 388,741.56, 536,464.80 and 225,429.90

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Solution

The fourth proportional to 388,741.56, 536,464.80 and 225,429.90 is: 311,094.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,741.56 : 536,464.80 = 225,429.90 : x
  2. Step 2: Convert to fraction form
    388,741.56/536,464.80 = 225,429.90/x
  3. Step 3: Cross multiply
    388,741.56x = 536,464.80 × 225,429.90
  4. Step 4: Simplify right side
    388,741.56x = 120,935,206,217.52
  5. Step 5: Solve for x
    x = 120,935,206,217.52/388,741.56
  6. Step 6: Final answer
    x = 311,094.10

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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.