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Finding the Fourth Proportional to 373,686, 515,697.63 and 203,931.06

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Solution

The fourth proportional to 373,686, 515,697.63 and 203,931.06 is: 281,430.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,686 : 515,697.63 = 203,931.06 : x
  2. Step 2: Convert to fraction form
    373,686/515,697.63 = 203,931.06/x
  3. Step 3: Cross multiply
    373,686x = 515,697.63 × 203,931.06
  4. Step 4: Simplify right side
    373,686x = 105,166,764,325.39
  5. Step 5: Solve for x
    x = 105,166,764,325.39/373,686
  6. Step 6: Final answer
    x = 281,430.84

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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.