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Finding the Fourth Proportional to 629,373.12, 943,855.52 and 208,536

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Solution

The fourth proportional to 629,373.12, 943,855.52 and 208,536 is: 312,736.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,373.12 : 943,855.52 = 208,536 : x
  2. Step 2: Convert to fraction form
    629,373.12/943,855.52 = 208,536/x
  3. Step 3: Cross multiply
    629,373.12x = 943,855.52 × 208,536
  4. Step 4: Simplify right side
    629,373.12x = 196,827,854,718.72
  5. Step 5: Solve for x
    x = 196,827,854,718.72/629,373.12
  6. Step 6: Final answer
    x = 312,736.35

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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.