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Finding the Fourth Proportional to 491,176.68, 677,817.06 and 276,316.68

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Solution

The fourth proportional to 491,176.68, 677,817.06 and 276,316.68 is: 381,313.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,176.68 : 677,817.06 = 276,316.68 : x
  2. Step 2: Convert to fraction form
    491,176.68/677,817.06 = 276,316.68/x
  3. Step 3: Cross multiply
    491,176.68x = 677,817.06 × 276,316.68
  4. Step 4: Simplify right side
    491,176.68x = 187,292,159,666.56
  5. Step 5: Solve for x
    x = 187,292,159,666.56/491,176.68
  6. Step 6: Final answer
    x = 381,313.22

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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.