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Finding the Fourth Proportional to 384,803.80, 577,205.70 and 135,453.40

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Solution

The fourth proportional to 384,803.80, 577,205.70 and 135,453.40 is: 203,180.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,803.80 : 577,205.70 = 135,453.40 : x
  2. Step 2: Convert to fraction form
    384,803.80/577,205.70 = 135,453.40/x
  3. Step 3: Cross multiply
    384,803.80x = 577,205.70 × 135,453.40
  4. Step 4: Simplify right side
    384,803.80x = 78,184,474,564.38
  5. Step 5: Solve for x
    x = 78,184,474,564.38/384,803.80
  6. Step 6: Final answer
    x = 203,180.10

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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.