Home / 218,761.10-328,141.65-163,465.10

Finding the Fourth Proportional to 218,761.10, 328,141.65 and 163,465.10

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Solution

The fourth proportional to 218,761.10, 328,141.65 and 163,465.10 is: 245,197.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,761.10 : 328,141.65 = 163,465.10 : x
  2. Step 2: Convert to fraction form
    218,761.10/328,141.65 = 163,465.10/x
  3. Step 3: Cross multiply
    218,761.10x = 328,141.65 × 163,465.10
  4. Step 4: Simplify right side
    218,761.10x = 53,639,707,631.42
  5. Step 5: Solve for x
    x = 53,639,707,631.42/218,761.10
  6. Step 6: Final answer
    x = 245,197.65

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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.