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Finding the Fourth Proportional to 347,706, 479,834.28 and 188,730

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Solution

The fourth proportional to 347,706, 479,834.28 and 188,730 is: 260,447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,706 : 479,834.28 = 188,730 : x
  2. Step 2: Convert to fraction form
    347,706/479,834.28 = 188,730/x
  3. Step 3: Cross multiply
    347,706x = 479,834.28 × 188,730
  4. Step 4: Simplify right side
    347,706x = 90,559,123,664.40
  5. Step 5: Solve for x
    x = 90,559,123,664.40/347,706
  6. Step 6: Final answer
    x = 260,447.40

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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.