Home / 278,549.69-384,422.36-157,712.27

Finding the Fourth Proportional to 278,549.69, 384,422.36 and 157,712.27

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Solution

The fourth proportional to 278,549.69, 384,422.36 and 157,712.27 is: 217,656.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,549.69 : 384,422.36 = 157,712.27 : x
  2. Step 2: Convert to fraction form
    278,549.69/384,422.36 = 157,712.27/x
  3. Step 3: Cross multiply
    278,549.69x = 384,422.36 × 157,712.27
  4. Step 4: Simplify right side
    278,549.69x = 60,628,120,323.68
  5. Step 5: Solve for x
    x = 60,628,120,323.68/278,549.69
  6. Step 6: Final answer
    x = 217,656.40

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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.