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Finding the Fourth Proportional to 386,406, 533,058.84 and 273,291.12

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Solution

The fourth proportional to 386,406, 533,058.84 and 273,291.12 is: 377,013.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,406 : 533,058.84 = 273,291.12 : x
  2. Step 2: Convert to fraction form
    386,406/533,058.84 = 273,291.12/x
  3. Step 3: Cross multiply
    386,406x = 533,058.84 × 273,291.12
  4. Step 4: Simplify right side
    386,406x = 145,680,247,409.50
  5. Step 5: Solve for x
    x = 145,680,247,409.50/386,406
  6. Step 6: Final answer
    x = 377,013.42

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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.