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Finding the Fourth Proportional to 243,858.32, 336,537.56 and 136,421.95

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Solution

The fourth proportional to 243,858.32, 336,537.56 and 136,421.95 is: 188,269.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,858.32 : 336,537.56 = 136,421.95 : x
  2. Step 2: Convert to fraction form
    243,858.32/336,537.56 = 136,421.95/x
  3. Step 3: Cross multiply
    243,858.32x = 336,537.56 × 136,421.95
  4. Step 4: Simplify right side
    243,858.32x = 45,911,107,818.64
  5. Step 5: Solve for x
    x = 45,911,107,818.64/243,858.32
  6. Step 6: Final answer
    x = 188,269.60

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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.