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Finding the Fourth Proportional to 264,889, 397,290.84 and 72,718.57

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Solution

The fourth proportional to 264,889, 397,290.84 and 72,718.57 is: 109,066.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,889 : 397,290.84 = 72,718.57 : x
  2. Step 2: Convert to fraction form
    264,889/397,290.84 = 72,718.57/x
  3. Step 3: Cross multiply
    264,889x = 397,290.84 × 72,718.57
  4. Step 4: Simplify right side
    264,889x = 28,890,421,758.90
  5. Step 5: Solve for x
    x = 28,890,421,758.90/264,889
  6. Step 6: Final answer
    x = 109,066.14

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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.