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Finding the Fourth Proportional to 326,196.10, 488,905.35 and 136,656.10

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Solution

The fourth proportional to 326,196.10, 488,905.35 and 136,656.10 is: 204,821.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,196.10 : 488,905.35 = 136,656.10 : x
  2. Step 2: Convert to fraction form
    326,196.10/488,905.35 = 136,656.10/x
  3. Step 3: Cross multiply
    326,196.10x = 488,905.35 × 136,656.10
  4. Step 4: Simplify right side
    326,196.10x = 66,811,898,400.14
  5. Step 5: Solve for x
    x = 66,811,898,400.14/326,196.10
  6. Step 6: Final answer
    x = 204,821.27

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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.