Home / 386,126.76-532,876.26-216,415.40

Finding the Fourth Proportional to 386,126.76, 532,876.26 and 216,415.40

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Solution

The fourth proportional to 386,126.76, 532,876.26 and 216,415.40 is: 298,665.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,126.76 : 532,876.26 = 216,415.40 : x
  2. Step 2: Convert to fraction form
    386,126.76/532,876.26 = 216,415.40/x
  3. Step 3: Cross multiply
    386,126.76x = 532,876.26 × 216,415.40
  4. Step 4: Simplify right side
    386,126.76x = 115,322,628,958.40
  5. Step 5: Solve for x
    x = 115,322,628,958.40/386,126.76
  6. Step 6: Final answer
    x = 298,665.21

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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.