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Finding the Fourth Proportional to 346,774.40, 520,291.20 and 136,558.88

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Solution

The fourth proportional to 346,774.40, 520,291.20 and 136,558.88 is: 204,889.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,774.40 : 520,291.20 = 136,558.88 : x
  2. Step 2: Convert to fraction form
    346,774.40/520,291.20 = 136,558.88/x
  3. Step 3: Cross multiply
    346,774.40x = 520,291.20 × 136,558.88
  4. Step 4: Simplify right side
    346,774.40x = 71,050,383,545.86
  5. Step 5: Solve for x
    x = 71,050,383,545.86/346,774.40
  6. Step 6: Final answer
    x = 204,889.36

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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.