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Finding the Fourth Proportional to 219,393, 302,755.05 and 122,602.86

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Solution

The fourth proportional to 219,393, 302,755.05 and 122,602.86 is: 169,187.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,393 : 302,755.05 = 122,602.86 : x
  2. Step 2: Convert to fraction form
    219,393/302,755.05 = 122,602.86/x
  3. Step 3: Cross multiply
    219,393x = 302,755.05 × 122,602.86
  4. Step 4: Simplify right side
    219,393x = 37,118,635,009.44
  5. Step 5: Solve for x
    x = 37,118,635,009.44/219,393
  6. Step 6: Final answer
    x = 169,187.87

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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.