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Finding the Fourth Proportional to 219,089.64, 302,342.82 and 118,487.72

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Solution

The fourth proportional to 219,089.64, 302,342.82 and 118,487.72 is: 163,512.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,089.64 : 302,342.82 = 118,487.72 : x
  2. Step 2: Convert to fraction form
    219,089.64/302,342.82 = 118,487.72/x
  3. Step 3: Cross multiply
    219,089.64x = 302,342.82 × 118,487.72
  4. Step 4: Simplify right side
    219,089.64x = 35,823,911,400.17
  5. Step 5: Solve for x
    x = 35,823,911,400.17/219,089.64
  6. Step 6: Final answer
    x = 163,512.58

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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.