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Finding the Fourth Proportional to 219,988, 303,662.16 and 130,564

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Solution

The fourth proportional to 219,988, 303,662.16 and 130,564 is: 180,225.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,988 : 303,662.16 = 130,564 : x
  2. Step 2: Convert to fraction form
    219,988/303,662.16 = 130,564/x
  3. Step 3: Cross multiply
    219,988x = 303,662.16 × 130,564
  4. Step 4: Simplify right side
    219,988x = 39,647,346,258.24
  5. Step 5: Solve for x
    x = 39,647,346,258.24/219,988
  6. Step 6: Final answer
    x = 180,225.04

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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.