Home / 389,311.20-583,772.40-178,711.20

Finding the Fourth Proportional to 389,311.20, 583,772.40 and 178,711.20

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Solution

The fourth proportional to 389,311.20, 583,772.40 and 178,711.20 is: 267,977.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,311.20 : 583,772.40 = 178,711.20 : x
  2. Step 2: Convert to fraction form
    389,311.20/583,772.40 = 178,711.20/x
  3. Step 3: Cross multiply
    389,311.20x = 583,772.40 × 178,711.20
  4. Step 4: Simplify right side
    389,311.20x = 104,326,666,130.88
  5. Step 5: Solve for x
    x = 104,326,666,130.88/389,311.20
  6. Step 6: Final answer
    x = 267,977.56

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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.