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Finding the Fourth Proportional to 253,984.68, 380,939.58 and 67,009.32

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Solution

The fourth proportional to 253,984.68, 380,939.58 and 67,009.32 is: 100,504.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,984.68 : 380,939.58 = 67,009.32 : x
  2. Step 2: Convert to fraction form
    253,984.68/380,939.58 = 67,009.32/x
  3. Step 3: Cross multiply
    253,984.68x = 380,939.58 × 67,009.32
  4. Step 4: Simplify right side
    253,984.68x = 25,526,502,216.89
  5. Step 5: Solve for x
    x = 25,526,502,216.89/253,984.68
  6. Step 6: Final answer
    x = 100,504.10

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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.