Home / 278,513.68-384,350.04-157,678.29

Finding the Fourth Proportional to 278,513.68, 384,350.04 and 157,678.29

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Solution

The fourth proportional to 278,513.68, 384,350.04 and 157,678.29 is: 217,596.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,513.68 : 384,350.04 = 157,678.29 : x
  2. Step 2: Convert to fraction form
    278,513.68/384,350.04 = 157,678.29/x
  3. Step 3: Cross multiply
    278,513.68x = 384,350.04 × 157,678.29
  4. Step 4: Simplify right side
    278,513.68x = 60,603,655,036.03
  5. Step 5: Solve for x
    x = 60,603,655,036.03/278,513.68
  6. Step 6: Final answer
    x = 217,596.69

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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.