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Finding the Fourth Proportional to 306,818.29, 423,423.48 and 170,861.01

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Solution

The fourth proportional to 306,818.29, 423,423.48 and 170,861.01 is: 235,796.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,818.29 : 423,423.48 = 170,861.01 : x
  2. Step 2: Convert to fraction form
    306,818.29/423,423.48 = 170,861.01/x
  3. Step 3: Cross multiply
    306,818.29x = 423,423.48 × 170,861.01
  4. Step 4: Simplify right side
    306,818.29x = 72,346,563,450.51
  5. Step 5: Solve for x
    x = 72,346,563,450.51/306,818.29
  6. Step 6: Final answer
    x = 235,796.12

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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.