Home / 509,149.20-763,529.40-154,045.20

Finding the Fourth Proportional to 509,149.20, 763,529.40 and 154,045.20

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Solution

The fourth proportional to 509,149.20, 763,529.40 and 154,045.20 is: 231,008.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,149.20 : 763,529.40 = 154,045.20 : x
  2. Step 2: Convert to fraction form
    509,149.20/763,529.40 = 154,045.20/x
  3. Step 3: Cross multiply
    509,149.20x = 763,529.40 × 154,045.20
  4. Step 4: Simplify right side
    509,149.20x = 117,618,039,128.88
  5. Step 5: Solve for x
    x = 117,618,039,128.88/509,149.20
  6. Step 6: Final answer
    x = 231,008.98

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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.