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Finding the Fourth Proportional to 544,071.40, 816,107.10 and 211,431.40

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Solution

The fourth proportional to 544,071.40, 816,107.10 and 211,431.40 is: 317,147.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,071.40 : 816,107.10 = 211,431.40 : x
  2. Step 2: Convert to fraction form
    544,071.40/816,107.10 = 211,431.40/x
  3. Step 3: Cross multiply
    544,071.40x = 816,107.10 × 211,431.40
  4. Step 4: Simplify right side
    544,071.40x = 172,550,666,702.94
  5. Step 5: Solve for x
    x = 172,550,666,702.94/544,071.40
  6. Step 6: Final answer
    x = 317,147.10

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Double scale
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Similar ratio
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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.