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Finding the Fourth Proportional to 305,060.64, 420,982.48 and 170,924.32

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Solution

The fourth proportional to 305,060.64, 420,982.48 and 170,924.32 is: 235,874.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,060.64 : 420,982.48 = 170,924.32 : x
  2. Step 2: Convert to fraction form
    305,060.64/420,982.48 = 170,924.32/x
  3. Step 3: Cross multiply
    305,060.64x = 420,982.48 × 170,924.32
  4. Step 4: Simplify right side
    305,060.64x = 71,956,144,125.91
  5. Step 5: Solve for x
    x = 71,956,144,125.91/305,060.64
  6. Step 6: Final answer
    x = 235,874.89

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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.