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Finding the Fourth Proportional to 455,486.65, 683,644.58 and 242,433.43

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Solution

The fourth proportional to 455,486.65, 683,644.58 and 242,433.43 is: 363,870.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,486.65 : 683,644.58 = 242,433.43 : x
  2. Step 2: Convert to fraction form
    455,486.65/683,644.58 = 242,433.43/x
  3. Step 3: Cross multiply
    455,486.65x = 683,644.58 × 242,433.43
  4. Step 4: Simplify right side
    455,486.65x = 165,738,300,430.31
  5. Step 5: Solve for x
    x = 165,738,300,430.31/455,486.65
  6. Step 6: Final answer
    x = 363,870.82

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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.