Home / 385,050.28-531,358.50-215,300.20

Finding the Fourth Proportional to 385,050.28, 531,358.50 and 215,300.20

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Solution

The fourth proportional to 385,050.28, 531,358.50 and 215,300.20 is: 297,108.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,050.28 : 531,358.50 = 215,300.20 : x
  2. Step 2: Convert to fraction form
    385,050.28/531,358.50 = 215,300.20/x
  3. Step 3: Cross multiply
    385,050.28x = 531,358.50 × 215,300.20
  4. Step 4: Simplify right side
    385,050.28x = 114,401,591,321.70
  5. Step 5: Solve for x
    x = 114,401,591,321.70/385,050.28
  6. Step 6: Final answer
    x = 297,108.19

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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.