Home / 389,921.80-584,882.70-256,952.20

Finding the Fourth Proportional to 389,921.80, 584,882.70 and 256,952.20

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Solution

The fourth proportional to 389,921.80, 584,882.70 and 256,952.20 is: 385,428.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,921.80 : 584,882.70 = 256,952.20 : x
  2. Step 2: Convert to fraction form
    389,921.80/584,882.70 = 256,952.20/x
  3. Step 3: Cross multiply
    389,921.80x = 584,882.70 × 256,952.20
  4. Step 4: Simplify right side
    389,921.80x = 150,286,896,506.94
  5. Step 5: Solve for x
    x = 150,286,896,506.94/389,921.80
  6. Step 6: Final answer
    x = 385,428.30

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1.5x scale

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.