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Finding the Fourth Proportional to 545,431.52, 818,184.56 and 185,455.82

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Solution

The fourth proportional to 545,431.52, 818,184.56 and 185,455.82 is: 278,196.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,431.52 : 818,184.56 = 185,455.82 : x
  2. Step 2: Convert to fraction form
    545,431.52/818,184.56 = 185,455.82/x
  3. Step 3: Cross multiply
    545,431.52x = 818,184.56 × 185,455.82
  4. Step 4: Simplify right side
    545,431.52x = 151,737,087,558.86
  5. Step 5: Solve for x
    x = 151,737,087,558.86/545,431.52
  6. Step 6: Final answer
    x = 278,196.40

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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.