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Finding the Fourth Proportional to 219,419.26, 329,128.90 and 53,207.26

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Solution

The fourth proportional to 219,419.26, 329,128.90 and 53,207.26 is: 79,810.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,419.26 : 329,128.90 = 53,207.26 : x
  2. Step 2: Convert to fraction form
    219,419.26/329,128.90 = 53,207.26/x
  3. Step 3: Cross multiply
    219,419.26x = 329,128.90 × 53,207.26
  4. Step 4: Simplify right side
    219,419.26x = 17,512,046,955.81
  5. Step 5: Solve for x
    x = 17,512,046,955.81/219,419.26
  6. Step 6: Final answer
    x = 79,810.89

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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.