Home / 385,318.08-531,738.18-215,552.21

Finding the Fourth Proportional to 385,318.08, 531,738.18 and 215,552.21

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Solution

The fourth proportional to 385,318.08, 531,738.18 and 215,552.21 is: 297,461.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,318.08 : 531,738.18 = 215,552.21 : x
  2. Step 2: Convert to fraction form
    385,318.08/531,738.18 = 215,552.21/x
  3. Step 3: Cross multiply
    385,318.08x = 531,738.18 × 215,552.21
  4. Step 4: Simplify right side
    385,318.08x = 114,617,337,181.69
  5. Step 5: Solve for x
    x = 114,617,337,181.69/385,318.08
  6. Step 6: Final answer
    x = 297,461.61

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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.