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Finding the Fourth Proportional to 545,902.60, 818,969.10 and 171,963.40

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Solution

The fourth proportional to 545,902.60, 818,969.10 and 171,963.40 is: 257,981.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,902.60 : 818,969.10 = 171,963.40 : x
  2. Step 2: Convert to fraction form
    545,902.60/818,969.10 = 171,963.40/x
  3. Step 3: Cross multiply
    545,902.60x = 818,969.10 × 171,963.40
  4. Step 4: Simplify right side
    545,902.60x = 140,832,710,930.94
  5. Step 5: Solve for x
    x = 140,832,710,930.94/545,902.60
  6. Step 6: Final answer
    x = 257,981.39

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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.