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Finding the Fourth Proportional to 306,616.74, 423,145.04 and 170,659.40

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Solution

The fourth proportional to 306,616.74, 423,145.04 and 170,659.40 is: 235,517.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,616.74 : 423,145.04 = 170,659.40 : x
  2. Step 2: Convert to fraction form
    306,616.74/423,145.04 = 170,659.40/x
  3. Step 3: Cross multiply
    306,616.74x = 423,145.04 × 170,659.40
  4. Step 4: Simplify right side
    306,616.74x = 72,213,675,670.35
  5. Step 5: Solve for x
    x = 72,213,675,670.35/306,616.74
  6. Step 6: Final answer
    x = 235,517.72

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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.