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Finding the Fourth Proportional to 208,235.70, 312,171.30 and 141,459.30

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Solution

The fourth proportional to 208,235.70, 312,171.30 and 141,459.30 is: 212,065.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,235.70 : 312,171.30 = 141,459.30 : x
  2. Step 2: Convert to fraction form
    208,235.70/312,171.30 = 141,459.30/x
  3. Step 3: Cross multiply
    208,235.70x = 312,171.30 × 141,459.30
  4. Step 4: Simplify right side
    208,235.70x = 44,159,533,578.09
  5. Step 5: Solve for x
    x = 44,159,533,578.09/208,235.70
  6. Step 6: Final answer
    x = 212,065.14

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1.5x scale

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.