Home / 345,530.73-518,369.91-120,898.50

Finding the Fourth Proportional to 345,530.73, 518,369.91 and 120,898.50

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Solution

The fourth proportional to 345,530.73, 518,369.91 and 120,898.50 is: 181,373.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,530.73 : 518,369.91 = 120,898.50 : x
  2. Step 2: Convert to fraction form
    345,530.73/518,369.91 = 120,898.50/x
  3. Step 3: Cross multiply
    345,530.73x = 518,369.91 × 120,898.50
  4. Step 4: Simplify right side
    345,530.73x = 62,670,144,564.14
  5. Step 5: Solve for x
    x = 62,670,144,564.14/345,530.73
  6. Step 6: Final answer
    x = 181,373.58

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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.