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Finding the Fourth Proportional to 385,843.32, 532,464.21 and 216,077.45

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Solution

The fourth proportional to 385,843.32, 532,464.21 and 216,077.45 is: 298,187.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,843.32 : 532,464.21 = 216,077.45 : x
  2. Step 2: Convert to fraction form
    385,843.32/532,464.21 = 216,077.45/x
  3. Step 3: Cross multiply
    385,843.32x = 532,464.21 × 216,077.45
  4. Step 4: Simplify right side
    385,843.32x = 115,053,508,713.07
  5. Step 5: Solve for x
    x = 115,053,508,713.07/385,843.32
  6. Step 6: Final answer
    x = 298,187.12

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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.