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Finding the Fourth Proportional to 346,775.40, 520,292.70 and 136,559.88

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Solution

The fourth proportional to 346,775.40, 520,292.70 and 136,559.88 is: 204,890.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,775.40 : 520,292.70 = 136,559.88 : x
  2. Step 2: Convert to fraction form
    346,775.40/520,292.70 = 136,559.88/x
  3. Step 3: Cross multiply
    346,775.40x = 520,292.70 × 136,559.88
  4. Step 4: Simplify right side
    346,775.40x = 71,051,108,676.88
  5. Step 5: Solve for x
    x = 71,051,108,676.88/346,775.40
  6. Step 6: Final answer
    x = 204,890.86

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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.