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Finding the Fourth Proportional to 548,703.63, 757,240.42 and 306,971.78

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Solution

The fourth proportional to 548,703.63, 757,240.42 and 306,971.78 is: 423,637.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,703.63 : 757,240.42 = 306,971.78 : x
  2. Step 2: Convert to fraction form
    548,703.63/757,240.42 = 306,971.78/x
  3. Step 3: Cross multiply
    548,703.63x = 757,240.42 × 306,971.78
  4. Step 4: Simplify right side
    548,703.63x = 232,451,440,741.02
  5. Step 5: Solve for x
    x = 232,451,440,741.02/548,703.63
  6. Step 6: Final answer
    x = 423,637.51

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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.