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Finding the Fourth Proportional to 305,062.64, 420,985.24 and 170,926.32

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Solution

The fourth proportional to 305,062.64, 420,985.24 and 170,926.32 is: 235,877.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,062.64 : 420,985.24 = 170,926.32 : x
  2. Step 2: Convert to fraction form
    305,062.64/420,985.24 = 170,926.32/x
  3. Step 3: Cross multiply
    305,062.64x = 420,985.24 × 170,926.32
  4. Step 4: Simplify right side
    305,062.64x = 71,957,457,847.52
  5. Step 5: Solve for x
    x = 71,957,457,847.52/305,062.64
  6. Step 6: Final answer
    x = 235,877.65

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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.