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Finding the Fourth Proportional to 545,080.75, 752,042.13 and 309,295.96

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Solution

The fourth proportional to 545,080.75, 752,042.13 and 309,295.96 is: 426,732.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,080.75 : 752,042.13 = 309,295.96 : x
  2. Step 2: Convert to fraction form
    545,080.75/752,042.13 = 309,295.96/x
  3. Step 3: Cross multiply
    545,080.75x = 752,042.13 × 309,295.96
  4. Step 4: Simplify right side
    545,080.75x = 232,603,592,558.80
  5. Step 5: Solve for x
    x = 232,603,592,558.80/545,080.75
  6. Step 6: Final answer
    x = 426,732.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.