Home / 509,721.12-764,562.20-154,720.80

Finding the Fourth Proportional to 509,721.12, 764,562.20 and 154,720.80

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Solution

The fourth proportional to 509,721.12, 764,562.20 and 154,720.80 is: 232,075.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,721.12 : 764,562.20 = 154,720.80 : x
  2. Step 2: Convert to fraction form
    509,721.12/764,562.20 = 154,720.80/x
  3. Step 3: Cross multiply
    509,721.12x = 764,562.20 × 154,720.80
  4. Step 4: Simplify right side
    509,721.12x = 118,293,675,233.76
  5. Step 5: Solve for x
    x = 118,293,675,233.76/509,721.12
  6. Step 6: Final answer
    x = 232,075.29

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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.