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Finding the Fourth Proportional to 495,872.59, 684,256.37 and 278,090.19

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Solution

The fourth proportional to 495,872.59, 684,256.37 and 278,090.19 is: 383,737.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,872.59 : 684,256.37 = 278,090.19 : x
  2. Step 2: Convert to fraction form
    495,872.59/684,256.37 = 278,090.19/x
  3. Step 3: Cross multiply
    495,872.59x = 684,256.37 × 278,090.19
  4. Step 4: Simplify right side
    495,872.59x = 190,284,982,551.56
  5. Step 5: Solve for x
    x = 190,284,982,551.56/495,872.59
  6. Step 6: Final answer
    x = 383,737.65

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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.