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Finding the Fourth Proportional to 420,059.52, 579,696.68 and 238,779.04

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Solution

The fourth proportional to 420,059.52, 579,696.68 and 238,779.04 is: 329,523.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,059.52 : 579,696.68 = 238,779.04 : x
  2. Step 2: Convert to fraction form
    420,059.52/579,696.68 = 238,779.04/x
  3. Step 3: Cross multiply
    420,059.52x = 579,696.68 × 238,779.04
  4. Step 4: Simplify right side
    420,059.52x = 138,419,416,741.59
  5. Step 5: Solve for x
    x = 138,419,416,741.59/420,059.52
  6. Step 6: Final answer
    x = 329,523.34

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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.