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Finding the Fourth Proportional to 219,530.64, 329,055.42 and 112,920.21

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Solution

The fourth proportional to 219,530.64, 329,055.42 and 112,920.21 is: 169,256.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,530.64 : 329,055.42 = 112,920.21 : x
  2. Step 2: Convert to fraction form
    219,530.64/329,055.42 = 112,920.21/x
  3. Step 3: Cross multiply
    219,530.64x = 329,055.42 × 112,920.21
  4. Step 4: Simplify right side
    219,530.64x = 37,157,007,128.04
  5. Step 5: Solve for x
    x = 37,157,007,128.04/219,530.64
  6. Step 6: Final answer
    x = 169,256.59

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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.