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Finding the Fourth Proportional to 219,373.20, 329,059.80 and 144,723.60

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Solution

The fourth proportional to 219,373.20, 329,059.80 and 144,723.60 is: 217,085.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,373.20 : 329,059.80 = 144,723.60 : x
  2. Step 2: Convert to fraction form
    219,373.20/329,059.80 = 144,723.60/x
  3. Step 3: Cross multiply
    219,373.20x = 329,059.80 × 144,723.60
  4. Step 4: Simplify right side
    219,373.20x = 47,622,718,871.28
  5. Step 5: Solve for x
    x = 47,622,718,871.28/219,373.20
  6. Step 6: Final answer
    x = 217,085.40

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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.