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Finding the Fourth Proportional to 389,171.16, 583,756.74 and 300,553.92

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Solution

The fourth proportional to 389,171.16, 583,756.74 and 300,553.92 is: 450,830.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,171.16 : 583,756.74 = 300,553.92 : x
  2. Step 2: Convert to fraction form
    389,171.16/583,756.74 = 300,553.92/x
  3. Step 3: Cross multiply
    389,171.16x = 583,756.74 × 300,553.92
  4. Step 4: Simplify right side
    389,171.16x = 175,450,376,533.42
  5. Step 5: Solve for x
    x = 175,450,376,533.42/389,171.16
  6. Step 6: Final answer
    x = 450,830.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.