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Finding the Fourth Proportional to 545,864.60, 818,912.10 and 171,925.40

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Solution

The fourth proportional to 545,864.60, 818,912.10 and 171,925.40 is: 257,924.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,864.60 : 818,912.10 = 171,925.40 : x
  2. Step 2: Convert to fraction form
    545,864.60/818,912.10 = 171,925.40/x
  3. Step 3: Cross multiply
    545,864.60x = 818,912.10 × 171,925.40
  4. Step 4: Simplify right side
    545,864.60x = 140,791,790,357.34
  5. Step 5: Solve for x
    x = 140,791,790,357.34/545,864.60
  6. Step 6: Final answer
    x = 257,924.38

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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.