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Finding the Fourth Proportional to 219,352.80, 329,077.80 and 172,113.60

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Solution

The fourth proportional to 219,352.80, 329,077.80 and 172,113.60 is: 258,208.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,352.80 : 329,077.80 = 172,113.60 : x
  2. Step 2: Convert to fraction form
    219,352.80/329,077.80 = 172,113.60/x
  3. Step 3: Cross multiply
    219,352.80x = 329,077.80 × 172,113.60
  4. Step 4: Simplify right side
    219,352.80x = 56,638,764,838.08
  5. Step 5: Solve for x
    x = 56,638,764,838.08/219,352.80
  6. Step 6: Final answer
    x = 258,208.53

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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.