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Finding the Fourth Proportional to 386,480, 533,160.96 and 273,365.12

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Solution

The fourth proportional to 386,480, 533,160.96 and 273,365.12 is: 377,115.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,480 : 533,160.96 = 273,365.12 : x
  2. Step 2: Convert to fraction form
    386,480/533,160.96 = 273,365.12/x
  3. Step 3: Cross multiply
    386,480x = 533,160.96 × 273,365.12
  4. Step 4: Simplify right side
    386,480x = 145,747,609,809.72
  5. Step 5: Solve for x
    x = 145,747,609,809.72/386,480
  6. Step 6: Final answer
    x = 377,115.53

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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.