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Finding the Fourth Proportional to 545,558.40, 818,337.38 and 171,581.40

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Solution

The fourth proportional to 545,558.40, 818,337.38 and 171,581.40 is: 257,372.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,558.40 : 818,337.38 = 171,581.40 : x
  2. Step 2: Convert to fraction form
    545,558.40/818,337.38 = 171,581.40/x
  3. Step 3: Cross multiply
    545,558.40x = 818,337.38 × 171,581.40
  4. Step 4: Simplify right side
    545,558.40x = 140,411,472,474.83
  5. Step 5: Solve for x
    x = 140,411,472,474.83/545,558.40
  6. Step 6: Final answer
    x = 257,372.03

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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.