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Finding the Fourth Proportional to 445,855.92, 615,569.40 and 276,270

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Solution

The fourth proportional to 445,855.92, 615,569.40 and 276,270 is: 381,431.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,855.92 : 615,569.40 = 276,270 : x
  2. Step 2: Convert to fraction form
    445,855.92/615,569.40 = 276,270/x
  3. Step 3: Cross multiply
    445,855.92x = 615,569.40 × 276,270
  4. Step 4: Simplify right side
    445,855.92x = 170,063,358,138
  5. Step 5: Solve for x
    x = 170,063,358,138/445,855.92
  6. Step 6: Final answer
    x = 381,431.20

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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.