Home / 219,387.20-328,821.60-163,918.40

Finding the Fourth Proportional to 219,387.20, 328,821.60 and 163,918.40

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Solution

The fourth proportional to 219,387.20, 328,821.60 and 163,918.40 is: 245,683.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,387.20 : 328,821.60 = 163,918.40 : x
  2. Step 2: Convert to fraction form
    219,387.20/328,821.60 = 163,918.40/x
  3. Step 3: Cross multiply
    219,387.20x = 328,821.60 × 163,918.40
  4. Step 4: Simplify right side
    219,387.20x = 53,899,910,557.44
  5. Step 5: Solve for x
    x = 53,899,910,557.44/219,387.20
  6. Step 6: Final answer
    x = 245,683.93

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1.5x scale

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.