Home / 345,472.20-517,037.85-212,436.72

Finding the Fourth Proportional to 345,472.20, 517,037.85 and 212,436.72

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Solution

The fourth proportional to 345,472.20, 517,037.85 and 212,436.72 is: 317,935.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,472.20 : 517,037.85 = 212,436.72 : x
  2. Step 2: Convert to fraction form
    345,472.20/517,037.85 = 212,436.72/x
  3. Step 3: Cross multiply
    345,472.20x = 517,037.85 × 212,436.72
  4. Step 4: Simplify right side
    345,472.20x = 109,837,824,969.85
  5. Step 5: Solve for x
    x = 109,837,824,969.85/345,472.20
  6. Step 6: Final answer
    x = 317,935.35

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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.