Home / 219,411.20-328,857.60-163,942.40

Finding the Fourth Proportional to 219,411.20, 328,857.60 and 163,942.40

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Solution

The fourth proportional to 219,411.20, 328,857.60 and 163,942.40 is: 245,719.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,411.20 : 328,857.60 = 163,942.40 : x
  2. Step 2: Convert to fraction form
    219,411.20/328,857.60 = 163,942.40/x
  3. Step 3: Cross multiply
    219,411.20x = 328,857.60 × 163,942.40
  4. Step 4: Simplify right side
    219,411.20x = 53,913,704,202.24
  5. Step 5: Solve for x
    x = 53,913,704,202.24/219,411.20
  6. Step 6: Final answer
    x = 245,719.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.