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Finding the Fourth Proportional to 326,117.10, 488,519.55 and 219,828.90

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Solution

The fourth proportional to 326,117.10, 488,519.55 and 219,828.90 is: 329,301.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,117.10 : 488,519.55 = 219,828.90 : x
  2. Step 2: Convert to fraction form
    326,117.10/488,519.55 = 219,828.90/x
  3. Step 3: Cross multiply
    326,117.10x = 488,519.55 × 219,828.90
  4. Step 4: Simplify right side
    326,117.10x = 107,390,715,305.00
  5. Step 5: Solve for x
    x = 107,390,715,305.00/326,117.10
  6. Step 6: Final answer
    x = 329,301.09

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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.