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Finding the Fourth Proportional to 307,096.20, 423,787.14 and 172,960.20

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Solution

The fourth proportional to 307,096.20, 423,787.14 and 172,960.20 is: 238,681.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,096.20 : 423,787.14 = 172,960.20 : x
  2. Step 2: Convert to fraction form
    307,096.20/423,787.14 = 172,960.20/x
  3. Step 3: Cross multiply
    307,096.20x = 423,787.14 × 172,960.20
  4. Step 4: Simplify right side
    307,096.20x = 73,298,308,491.83
  5. Step 5: Solve for x
    x = 73,298,308,491.83/307,096.20
  6. Step 6: Final answer
    x = 238,681.91

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1.5x scale

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.