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Finding the Fourth Proportional to 217,341.40, 325,817.70 and 142,497.40

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Solution

The fourth proportional to 217,341.40, 325,817.70 and 142,497.40 is: 213,618.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,341.40 : 325,817.70 = 142,497.40 : x
  2. Step 2: Convert to fraction form
    217,341.40/325,817.70 = 142,497.40/x
  3. Step 3: Cross multiply
    217,341.40x = 325,817.70 × 142,497.40
  4. Step 4: Simplify right side
    217,341.40x = 46,428,175,123.98
  5. Step 5: Solve for x
    x = 46,428,175,123.98/217,341.40
  6. Step 6: Final answer
    x = 213,618.64

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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.