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Finding the Fourth Proportional to 387,996.60, 582,019.47 and 121,767.63

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Solution

The fourth proportional to 387,996.60, 582,019.47 and 121,767.63 is: 182,659.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,996.60 : 582,019.47 = 121,767.63 : x
  2. Step 2: Convert to fraction form
    387,996.60/582,019.47 = 121,767.63/x
  3. Step 3: Cross multiply
    387,996.60x = 582,019.47 × 121,767.63
  4. Step 4: Simplify right side
    387,996.60x = 70,871,131,475.76
  5. Step 5: Solve for x
    x = 70,871,131,475.76/387,996.60
  6. Step 6: Final answer
    x = 182,659.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.