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Finding the Fourth Proportional to 279,566.40, 385,806.24 and 152,244.48

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Solution

The fourth proportional to 279,566.40, 385,806.24 and 152,244.48 is: 210,099.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,566.40 : 385,806.24 = 152,244.48 : x
  2. Step 2: Convert to fraction form
    279,566.40/385,806.24 = 152,244.48/x
  3. Step 3: Cross multiply
    279,566.40x = 385,806.24 × 152,244.48
  4. Step 4: Simplify right side
    279,566.40x = 58,736,870,389.56
  5. Step 5: Solve for x
    x = 58,736,870,389.56/279,566.40
  6. Step 6: Final answer
    x = 210,099.89

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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.