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Finding the Fourth Proportional to 267,138.64, 400,911.08 and 98,818.16

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Solution

The fourth proportional to 267,138.64, 400,911.08 and 98,818.16 is: 148,302.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,138.64 : 400,911.08 = 98,818.16 : x
  2. Step 2: Convert to fraction form
    267,138.64/400,911.08 = 98,818.16/x
  3. Step 3: Cross multiply
    267,138.64x = 400,911.08 × 98,818.16
  4. Step 4: Simplify right side
    267,138.64x = 39,617,295,249.21
  5. Step 5: Solve for x
    x = 39,617,295,249.21/267,138.64
  6. Step 6: Final answer
    x = 148,302.38

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1.5x scale

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.