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Finding the Fourth Proportional to 386,051.48, 532,772.94 and 216,340.28

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Solution

The fourth proportional to 386,051.48, 532,772.94 and 216,340.28 is: 298,561.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,051.48 : 532,772.94 = 216,340.28 : x
  2. Step 2: Convert to fraction form
    386,051.48/532,772.94 = 216,340.28/x
  3. Step 3: Cross multiply
    386,051.48x = 532,772.94 × 216,340.28
  4. Step 4: Simplify right side
    386,051.48x = 115,260,247,016.02
  5. Step 5: Solve for x
    x = 115,260,247,016.02/386,051.48
  6. Step 6: Final answer
    x = 298,561.86

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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.