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Finding the Fourth Proportional to 213,886.72, 295,159.44 and 118,387.84

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Solution

The fourth proportional to 213,886.72, 295,159.44 and 118,387.84 is: 163,372.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,886.72 : 295,159.44 = 118,387.84 : x
  2. Step 2: Convert to fraction form
    213,886.72/295,159.44 = 118,387.84/x
  3. Step 3: Cross multiply
    213,886.72x = 295,159.44 × 118,387.84
  4. Step 4: Simplify right side
    213,886.72x = 34,943,288,557.21
  5. Step 5: Solve for x
    x = 34,943,288,557.21/213,886.72
  6. Step 6: Final answer
    x = 163,372.88

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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.