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Finding the Fourth Proportional to 213,182.72, 319,742.08 and 134,055.68

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Solution

The fourth proportional to 213,182.72, 319,742.08 and 134,055.68 is: 201,063.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,182.72 : 319,742.08 = 134,055.68 : x
  2. Step 2: Convert to fraction form
    213,182.72/319,742.08 = 134,055.68/x
  3. Step 3: Cross multiply
    213,182.72x = 319,742.08 × 134,055.68
  4. Step 4: Simplify right side
    213,182.72x = 42,863,241,959.01
  5. Step 5: Solve for x
    x = 42,863,241,959.01/213,182.72
  6. Step 6: Final answer
    x = 201,063.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.