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Finding the Fourth Proportional to 545,520.50, 818,309.91 and 171,572.66

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Solution

The fourth proportional to 545,520.50, 818,309.91 and 171,572.66 is: 257,368.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,520.50 : 818,309.91 = 171,572.66 : x
  2. Step 2: Convert to fraction form
    545,520.50/818,309.91 = 171,572.66/x
  3. Step 3: Cross multiply
    545,520.50x = 818,309.91 × 171,572.66
  4. Step 4: Simplify right side
    545,520.50x = 140,399,607,963.06
  5. Step 5: Solve for x
    x = 140,399,607,963.06/545,520.50
  6. Step 6: Final answer
    x = 257,368.16

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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.