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Finding the Fourth Proportional to 548,475.12, 756,893.52 and 306,756.72

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Solution

The fourth proportional to 548,475.12, 756,893.52 and 306,756.72 is: 423,323.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,475.12 : 756,893.52 = 306,756.72 : x
  2. Step 2: Convert to fraction form
    548,475.12/756,893.52 = 306,756.72/x
  3. Step 3: Cross multiply
    548,475.12x = 756,893.52 × 306,756.72
  4. Step 4: Simplify right side
    548,475.12x = 232,182,173,584.45
  5. Step 5: Solve for x
    x = 232,182,173,584.45/548,475.12
  6. Step 6: Final answer
    x = 423,323.07

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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.