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Finding the Fourth Proportional to 451,009.86, 622,239.08 and 257,278.38

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Solution

The fourth proportional to 451,009.86, 622,239.08 and 257,278.38 is: 354,956.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,009.86 : 622,239.08 = 257,278.38 : x
  2. Step 2: Convert to fraction form
    451,009.86/622,239.08 = 257,278.38/x
  3. Step 3: Cross multiply
    451,009.86x = 622,239.08 × 257,278.38
  4. Step 4: Simplify right side
    451,009.86x = 160,088,662,475.09
  5. Step 5: Solve for x
    x = 160,088,662,475.09/451,009.86
  6. Step 6: Final answer
    x = 354,956.01

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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.