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Finding the Fourth Proportional to 548,999.91, 757,619.82 and 307,282.50

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Solution

The fourth proportional to 548,999.91, 757,619.82 and 307,282.50 is: 424,049.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,999.91 : 757,619.82 = 307,282.50 : x
  2. Step 2: Convert to fraction form
    548,999.91/757,619.82 = 307,282.50/x
  3. Step 3: Cross multiply
    548,999.91x = 757,619.82 × 307,282.50
  4. Step 4: Simplify right side
    548,999.91x = 232,803,312,339.15
  5. Step 5: Solve for x
    x = 232,803,312,339.15/548,999.91
  6. Step 6: Final answer
    x = 424,049.82

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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.