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Finding the Fourth Proportional to 345,424.84, 517,472.52 and 211,915.24

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Solution

The fourth proportional to 345,424.84, 517,472.52 and 211,915.24 is: 317,465.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,424.84 : 517,472.52 = 211,915.24 : x
  2. Step 2: Convert to fraction form
    345,424.84/517,472.52 = 211,915.24/x
  3. Step 3: Cross multiply
    345,424.84x = 517,472.52 × 211,915.24
  4. Step 4: Simplify right side
    345,424.84x = 109,660,313,269.21
  5. Step 5: Solve for x
    x = 109,660,313,269.21/345,424.84
  6. Step 6: Final answer
    x = 317,465.05

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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.