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Finding the Fourth Proportional to 280,043.73, 386,483.31 and 159,222.93

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Solution

The fourth proportional to 280,043.73, 386,483.31 and 159,222.93 is: 219,740.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,043.73 : 386,483.31 = 159,222.93 : x
  2. Step 2: Convert to fraction form
    280,043.73/386,483.31 = 159,222.93/x
  3. Step 3: Cross multiply
    280,043.73x = 386,483.31 × 159,222.93
  4. Step 4: Simplify right side
    280,043.73x = 61,537,005,014.30
  5. Step 5: Solve for x
    x = 61,537,005,014.30/280,043.73
  6. Step 6: Final answer
    x = 219,740.70

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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.