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Finding the Fourth Proportional to 219,995.58, 303,595.74 and 129,353.34

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Solution

The fourth proportional to 219,995.58, 303,595.74 and 129,353.34 is: 178,508.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,995.58 : 303,595.74 = 129,353.34 : x
  2. Step 2: Convert to fraction form
    219,995.58/303,595.74 = 129,353.34/x
  3. Step 3: Cross multiply
    219,995.58x = 303,595.74 × 129,353.34
  4. Step 4: Simplify right side
    219,995.58x = 39,271,122,978.77
  5. Step 5: Solve for x
    x = 39,271,122,978.77/219,995.58
  6. Step 6: Final answer
    x = 178,508.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.