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Finding the Fourth Proportional to 394,809.02, 544,585.62 and 258,851.78

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Solution

The fourth proportional to 394,809.02, 544,585.62 and 258,851.78 is: 357,051.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,809.02 : 544,585.62 = 258,851.78 : x
  2. Step 2: Convert to fraction form
    394,809.02/544,585.62 = 258,851.78/x
  3. Step 3: Cross multiply
    394,809.02x = 544,585.62 × 258,851.78
  4. Step 4: Simplify right side
    394,809.02x = 140,966,957,099.40
  5. Step 5: Solve for x
    x = 140,966,957,099.40/394,809.02
  6. Step 6: Final answer
    x = 357,051.00

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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.