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Finding the Fourth Proportional to 459,208.90, 633,759.54 and 278,020.68

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Solution

The fourth proportional to 459,208.90, 633,759.54 and 278,020.68 is: 383,699.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,208.90 : 633,759.54 = 278,020.68 : x
  2. Step 2: Convert to fraction form
    459,208.90/633,759.54 = 278,020.68/x
  3. Step 3: Cross multiply
    459,208.90x = 633,759.54 × 278,020.68
  4. Step 4: Simplify right side
    459,208.90x = 176,198,256,933.27
  5. Step 5: Solve for x
    x = 176,198,256,933.27/459,208.90
  6. Step 6: Final answer
    x = 383,699.57

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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.