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Finding the Fourth Proportional to 402,501.47, 603,861.09 and 136,262.01

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Solution

The fourth proportional to 402,501.47, 603,861.09 and 136,262.01 is: 204,429.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,501.47 : 603,861.09 = 136,262.01 : x
  2. Step 2: Convert to fraction form
    402,501.47/603,861.09 = 136,262.01/x
  3. Step 3: Cross multiply
    402,501.47x = 603,861.09 × 136,262.01
  4. Step 4: Simplify right side
    402,501.47x = 82,283,325,884.19
  5. Step 5: Solve for x
    x = 82,283,325,884.19/402,501.47
  6. Step 6: Final answer
    x = 204,429.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.