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Finding the Fourth Proportional to 304,717.72, 420,450.78 and 168,745.08

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Solution

The fourth proportional to 304,717.72, 420,450.78 and 168,745.08 is: 232,835.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,717.72 : 420,450.78 = 168,745.08 : x
  2. Step 2: Convert to fraction form
    304,717.72/420,450.78 = 168,745.08/x
  3. Step 3: Cross multiply
    304,717.72x = 420,450.78 × 168,745.08
  4. Step 4: Simplify right side
    304,717.72x = 70,949,000,507.16
  5. Step 5: Solve for x
    x = 70,949,000,507.16/304,717.72
  6. Step 6: Final answer
    x = 232,835.16

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1.5x scale

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.