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Finding the Fourth Proportional to 394,988.90, 592,483.35 and 253,271.30

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Solution

The fourth proportional to 394,988.90, 592,483.35 and 253,271.30 is: 379,906.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,988.90 : 592,483.35 = 253,271.30 : x
  2. Step 2: Convert to fraction form
    394,988.90/592,483.35 = 253,271.30/x
  3. Step 3: Cross multiply
    394,988.90x = 592,483.35 × 253,271.30
  4. Step 4: Simplify right side
    394,988.90x = 150,059,028,282.86
  5. Step 5: Solve for x
    x = 150,059,028,282.86/394,988.90
  6. Step 6: Final answer
    x = 379,906.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.