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Finding the Fourth Proportional to 306,861.64, 423,460.49 and 170,895.55

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Solution

The fourth proportional to 306,861.64, 423,460.49 and 170,895.55 is: 235,831.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,861.64 : 423,460.49 = 170,895.55 : x
  2. Step 2: Convert to fraction form
    306,861.64/423,460.49 = 170,895.55/x
  3. Step 3: Cross multiply
    306,861.64x = 423,460.49 × 170,895.55
  4. Step 4: Simplify right side
    306,861.64x = 72,367,510,370.04
  5. Step 5: Solve for x
    x = 72,367,510,370.04/306,861.64
  6. Step 6: Final answer
    x = 235,831.08

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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.