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Finding the Fourth Proportional to 219,688.40, 329,532.60 and 180,322.40

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Solution

The fourth proportional to 219,688.40, 329,532.60 and 180,322.40 is: 270,483.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,688.40 : 329,532.60 = 180,322.40 : x
  2. Step 2: Convert to fraction form
    219,688.40/329,532.60 = 180,322.40/x
  3. Step 3: Cross multiply
    219,688.40x = 329,532.60 × 180,322.40
  4. Step 4: Simplify right side
    219,688.40x = 59,422,109,310.24
  5. Step 5: Solve for x
    x = 59,422,109,310.24/219,688.40
  6. Step 6: Final answer
    x = 270,483.60

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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.