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Finding the Fourth Proportional to 385,708.89, 576,217.77 and 249,664.73

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Solution

The fourth proportional to 385,708.89, 576,217.77 and 249,664.73 is: 372,978.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,708.89 : 576,217.77 = 249,664.73 : x
  2. Step 2: Convert to fraction form
    385,708.89/576,217.77 = 249,664.73/x
  3. Step 3: Cross multiply
    385,708.89x = 576,217.77 × 249,664.73
  4. Step 4: Simplify right side
    385,708.89x = 143,861,255,498.69
  5. Step 5: Solve for x
    x = 143,861,255,498.69/385,708.89
  6. Step 6: Final answer
    x = 372,978.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.