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Finding the Fourth Proportional to 383,637.46, 529,407.54 and 211,562.68

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Solution

The fourth proportional to 383,637.46, 529,407.54 and 211,562.68 is: 291,949.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,637.46 : 529,407.54 = 211,562.68 : x
  2. Step 2: Convert to fraction form
    383,637.46/529,407.54 = 211,562.68/x
  3. Step 3: Cross multiply
    383,637.46x = 529,407.54 × 211,562.68
  4. Step 4: Simplify right side
    383,637.46x = 112,002,877,974.61
  5. Step 5: Solve for x
    x = 112,002,877,974.61/383,637.46
  6. Step 6: Final answer
    x = 291,949.80

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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.