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Finding the Fourth Proportional to 394,607.61, 544,706.59 and 258,650.32

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Solution

The fourth proportional to 394,607.61, 544,706.59 and 258,650.32 is: 357,034.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,607.61 : 544,706.59 = 258,650.32 : x
  2. Step 2: Convert to fraction form
    394,607.61/544,706.59 = 258,650.32/x
  3. Step 3: Cross multiply
    394,607.61x = 544,706.59 × 258,650.32
  4. Step 4: Simplify right side
    394,607.61x = 140,888,533,209.55
  5. Step 5: Solve for x
    x = 140,888,533,209.55/394,607.61
  6. Step 6: Final answer
    x = 357,034.51

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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.