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Finding the Fourth Proportional to 286,555.68, 395,438.76 and 159,228

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Solution

The fourth proportional to 286,555.68, 395,438.76 and 159,228 is: 219,730.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,555.68 : 395,438.76 = 159,228 : x
  2. Step 2: Convert to fraction form
    286,555.68/395,438.76 = 159,228/x
  3. Step 3: Cross multiply
    286,555.68x = 395,438.76 × 159,228
  4. Step 4: Simplify right side
    286,555.68x = 62,964,922,877.28
  5. Step 5: Solve for x
    x = 62,964,922,877.28/286,555.68
  6. Step 6: Final answer
    x = 219,730.15

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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.