Home / 385,540.18-531,981.97-242,198.71

Finding the Fourth Proportional to 385,540.18, 531,981.97 and 242,198.71

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Solution

The fourth proportional to 385,540.18, 531,981.97 and 242,198.71 is: 334,194.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,540.18 : 531,981.97 = 242,198.71 : x
  2. Step 2: Convert to fraction form
    385,540.18/531,981.97 = 242,198.71/x
  3. Step 3: Cross multiply
    385,540.18x = 531,981.97 × 242,198.71
  4. Step 4: Simplify right side
    385,540.18x = 128,845,346,877.26
  5. Step 5: Solve for x
    x = 128,845,346,877.26/385,540.18
  6. Step 6: Final answer
    x = 334,194.34

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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.