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Finding the Fourth Proportional to 545,361.06, 818,082.59 and 145,992.98

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Solution

The fourth proportional to 545,361.06, 818,082.59 and 145,992.98 is: 219,000.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,361.06 : 818,082.59 = 145,992.98 : x
  2. Step 2: Convert to fraction form
    545,361.06/818,082.59 = 145,992.98/x
  3. Step 3: Cross multiply
    545,361.06x = 818,082.59 × 145,992.98
  4. Step 4: Simplify right side
    545,361.06x = 119,434,315,200.22
  5. Step 5: Solve for x
    x = 119,434,315,200.22/545,361.06
  6. Step 6: Final answer
    x = 219,000.45

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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.