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Finding the Fourth Proportional to 445,813.16, 615,460.80 and 343,614.64

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Solution

The fourth proportional to 445,813.16, 615,460.80 and 343,614.64 is: 474,372.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,813.16 : 615,460.80 = 343,614.64 : x
  2. Step 2: Convert to fraction form
    445,813.16/615,460.80 = 343,614.64/x
  3. Step 3: Cross multiply
    445,813.16x = 615,460.80 × 343,614.64
  4. Step 4: Simplify right side
    445,813.16x = 211,481,341,226.11
  5. Step 5: Solve for x
    x = 211,481,341,226.11/445,813.16
  6. Step 6: Final answer
    x = 474,372.14

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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.