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Finding the Fourth Proportional to 487,755.42, 673,128.63 and 272,882.64

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Solution

The fourth proportional to 487,755.42, 673,128.63 and 272,882.64 is: 376,592.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,755.42 : 673,128.63 = 272,882.64 : x
  2. Step 2: Convert to fraction form
    487,755.42/673,128.63 = 272,882.64/x
  3. Step 3: Cross multiply
    487,755.42x = 673,128.63 × 272,882.64
  4. Step 4: Simplify right side
    487,755.42x = 183,685,117,613.98
  5. Step 5: Solve for x
    x = 183,685,117,613.98/487,755.42
  6. Step 6: Final answer
    x = 376,592.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.