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Finding the Fourth Proportional to 545,951.60, 819,042.60 and 172,012.40

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Solution

The fourth proportional to 545,951.60, 819,042.60 and 172,012.40 is: 258,054.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,951.60 : 819,042.60 = 172,012.40 : x
  2. Step 2: Convert to fraction form
    545,951.60/819,042.60 = 172,012.40/x
  3. Step 3: Cross multiply
    545,951.60x = 819,042.60 × 172,012.40
  4. Step 4: Simplify right side
    545,951.60x = 140,885,483,328.24
  5. Step 5: Solve for x
    x = 140,885,483,328.24/545,951.60
  6. Step 6: Final answer
    x = 258,054.90

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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.