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Finding the Fourth Proportional to 403,868.72, 605,875.11 and 134,013.07

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Solution

The fourth proportional to 403,868.72, 605,875.11 and 134,013.07 is: 201,043.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,868.72 : 605,875.11 = 134,013.07 : x
  2. Step 2: Convert to fraction form
    403,868.72/605,875.11 = 134,013.07/x
  3. Step 3: Cross multiply
    403,868.72x = 605,875.11 × 134,013.07
  4. Step 4: Simplify right side
    403,868.72x = 81,195,183,527.69
  5. Step 5: Solve for x
    x = 81,195,183,527.69/403,868.72
  6. Step 6: Final answer
    x = 201,043.51

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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.