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Finding the Fourth Proportional to 219,725.80, 329,070.30 and 149,223.40

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Solution

The fourth proportional to 219,725.80, 329,070.30 and 149,223.40 is: 223,483.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,725.80 : 329,070.30 = 149,223.40 : x
  2. Step 2: Convert to fraction form
    219,725.80/329,070.30 = 149,223.40/x
  3. Step 3: Cross multiply
    219,725.80x = 329,070.30 × 149,223.40
  4. Step 4: Simplify right side
    219,725.80x = 49,104,989,005.02
  5. Step 5: Solve for x
    x = 49,104,989,005.02/219,725.80
  6. Step 6: Final answer
    x = 223,483.04

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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.