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Finding the Fourth Proportional to 320,710.72, 442,627.80 and 184,718.20

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Solution

The fourth proportional to 320,710.72, 442,627.80 and 184,718.20 is: 254,938.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,710.72 : 442,627.80 = 184,718.20 : x
  2. Step 2: Convert to fraction form
    320,710.72/442,627.80 = 184,718.20/x
  3. Step 3: Cross multiply
    320,710.72x = 442,627.80 × 184,718.20
  4. Step 4: Simplify right side
    320,710.72x = 81,761,410,485.96
  5. Step 5: Solve for x
    x = 81,761,410,485.96/320,710.72
  6. Step 6: Final answer
    x = 254,938.19

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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.