Home / 323,923.40-485,666.40-172,145.60

Finding the Fourth Proportional to 323,923.40, 485,666.40 and 172,145.60

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Solution

The fourth proportional to 323,923.40, 485,666.40 and 172,145.60 is: 258,102.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,923.40 : 485,666.40 = 172,145.60 : x
  2. Step 2: Convert to fraction form
    323,923.40/485,666.40 = 172,145.60/x
  3. Step 3: Cross multiply
    323,923.40x = 485,666.40 × 172,145.60
  4. Step 4: Simplify right side
    323,923.40x = 83,605,333,827.84
  5. Step 5: Solve for x
    x = 83,605,333,827.84/323,923.40
  6. Step 6: Final answer
    x = 258,102.17

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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.