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Finding the Fourth Proportional to 644,346.42, 966,149.25 and 265,528.65

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Solution

The fourth proportional to 644,346.42, 966,149.25 and 265,528.65 is: 398,140.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,346.42 : 966,149.25 = 265,528.65 : x
  2. Step 2: Convert to fraction form
    644,346.42/966,149.25 = 265,528.65/x
  3. Step 3: Cross multiply
    644,346.42x = 966,149.25 × 265,528.65
  4. Step 4: Simplify right side
    644,346.42x = 256,540,306,051.01
  5. Step 5: Solve for x
    x = 256,540,306,051.01/644,346.42
  6. Step 6: Final answer
    x = 398,140.35

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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.