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Finding the Fourth Proportional to 278,757.54, 384,683.29 and 151,434.04

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Solution

The fourth proportional to 278,757.54, 384,683.29 and 151,434.04 is: 208,977.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,757.54 : 384,683.29 = 151,434.04 : x
  2. Step 2: Convert to fraction form
    278,757.54/384,683.29 = 151,434.04/x
  3. Step 3: Cross multiply
    278,757.54x = 384,683.29 × 151,434.04
  4. Step 4: Simplify right side
    278,757.54x = 58,254,144,725.19
  5. Step 5: Solve for x
    x = 58,254,144,725.19/278,757.54
  6. Step 6: Final answer
    x = 208,977.83

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1.5x scale

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.