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Finding the Fourth Proportional to 219,388.88, 302,756.65 and 118,786.88

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Solution

The fourth proportional to 219,388.88, 302,756.65 and 118,786.88 is: 163,925.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,388.88 : 302,756.65 = 118,786.88 : x
  2. Step 2: Convert to fraction form
    219,388.88/302,756.65 = 118,786.88/x
  3. Step 3: Cross multiply
    219,388.88x = 302,756.65 × 118,786.88
  4. Step 4: Simplify right side
    219,388.88x = 35,963,516,042.00
  5. Step 5: Solve for x
    x = 35,963,516,042.00/219,388.88
  6. Step 6: Final answer
    x = 163,925.89

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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.