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Finding the Fourth Proportional to 378,779.20, 568,256.16 and 112,533.76

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Solution

The fourth proportional to 378,779.20, 568,256.16 and 112,533.76 is: 168,826.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,779.20 : 568,256.16 = 112,533.76 : x
  2. Step 2: Convert to fraction form
    378,779.20/568,256.16 = 112,533.76/x
  3. Step 3: Cross multiply
    378,779.20x = 568,256.16 × 112,533.76
  4. Step 4: Simplify right side
    378,779.20x = 63,948,002,327.96
  5. Step 5: Solve for x
    x = 63,948,002,327.96/378,779.20
  6. Step 6: Final answer
    x = 168,826.59

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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.