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Finding the Fourth Proportional to 402,884.72, 556,125.53 and 239,540.84

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Solution

The fourth proportional to 402,884.72, 556,125.53 and 239,540.84 is: 330,652.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,884.72 : 556,125.53 = 239,540.84 : x
  2. Step 2: Convert to fraction form
    402,884.72/556,125.53 = 239,540.84/x
  3. Step 3: Cross multiply
    402,884.72x = 556,125.53 × 239,540.84
  4. Step 4: Simplify right side
    402,884.72x = 133,214,774,997.38
  5. Step 5: Solve for x
    x = 133,214,774,997.38/402,884.72
  6. Step 6: Final answer
    x = 330,652.34

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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.