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Finding the Fourth Proportional to 455,780.91, 683,871.81 and 242,498.67

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Solution

The fourth proportional to 455,780.91, 683,871.81 and 242,498.67 is: 363,854.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,780.91 : 683,871.81 = 242,498.67 : x
  2. Step 2: Convert to fraction form
    455,780.91/683,871.81 = 242,498.67/x
  3. Step 3: Cross multiply
    455,780.91x = 683,871.81 × 242,498.67
  4. Step 4: Simplify right side
    455,780.91x = 165,838,004,375.49
  5. Step 5: Solve for x
    x = 165,838,004,375.49/455,780.91
  6. Step 6: Final answer
    x = 363,854.65

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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.