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Finding the Fourth Proportional to 306,638.52, 423,108.48 and 281,834.82

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Solution

The fourth proportional to 306,638.52, 423,108.48 and 281,834.82 is: 388,883.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,638.52 : 423,108.48 = 281,834.82 : x
  2. Step 2: Convert to fraction form
    306,638.52/423,108.48 = 281,834.82/x
  3. Step 3: Cross multiply
    306,638.52x = 423,108.48 × 281,834.82
  4. Step 4: Simplify right side
    306,638.52x = 119,246,702,301.27
  5. Step 5: Solve for x
    x = 119,246,702,301.27/306,638.52
  6. Step 6: Final answer
    x = 388,883.64

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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.