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Finding the Fourth Proportional to 386,404, 533,056.08 and 273,289.12

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Solution

The fourth proportional to 386,404, 533,056.08 and 273,289.12 is: 377,010.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,404 : 533,056.08 = 273,289.12 : x
  2. Step 2: Convert to fraction form
    386,404/533,056.08 = 273,289.12/x
  3. Step 3: Cross multiply
    386,404x = 533,056.08 × 273,289.12
  4. Step 4: Simplify right side
    386,404x = 145,678,427,013.85
  5. Step 5: Solve for x
    x = 145,678,427,013.85/386,404
  6. Step 6: Final answer
    x = 377,010.66

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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.