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Finding the Fourth Proportional to 219,341.72, 302,690.22 and 118,739

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Solution

The fourth proportional to 219,341.72, 302,690.22 and 118,739 is: 163,859.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,341.72 : 302,690.22 = 118,739 : x
  2. Step 2: Convert to fraction form
    219,341.72/302,690.22 = 118,739/x
  3. Step 3: Cross multiply
    219,341.72x = 302,690.22 × 118,739
  4. Step 4: Simplify right side
    219,341.72x = 35,941,134,032.58
  5. Step 5: Solve for x
    x = 35,941,134,032.58/219,341.72
  6. Step 6: Final answer
    x = 163,859.09

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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.