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Finding the Fourth Proportional to 386,608.78, 533,523 and 214,527.42

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Solution

The fourth proportional to 386,608.78, 533,523 and 214,527.42 is: 296,049.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,608.78 : 533,523 = 214,527.42 : x
  2. Step 2: Convert to fraction form
    386,608.78/533,523 = 214,527.42/x
  3. Step 3: Cross multiply
    386,608.78x = 533,523 × 214,527.42
  4. Step 4: Simplify right side
    386,608.78x = 114,455,312,700.66
  5. Step 5: Solve for x
    x = 114,455,312,700.66/386,608.78
  6. Step 6: Final answer
    x = 296,049.44

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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.