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Finding the Fourth Proportional to 384,856.08, 531,102.16 and 215,090.20

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Solution

The fourth proportional to 384,856.08, 531,102.16 and 215,090.20 is: 296,824.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,856.08 : 531,102.16 = 215,090.20 : x
  2. Step 2: Convert to fraction form
    384,856.08/531,102.16 = 215,090.20/x
  3. Step 3: Cross multiply
    384,856.08x = 531,102.16 × 215,090.20
  4. Step 4: Simplify right side
    384,856.08x = 114,234,869,814.83
  5. Step 5: Solve for x
    x = 114,234,869,814.83/384,856.08
  6. Step 6: Final answer
    x = 296,824.91

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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.