Home / 315,421.11-472,647.09-214,087.38

Finding the Fourth Proportional to 315,421.11, 472,647.09 and 214,087.38

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Solution

The fourth proportional to 315,421.11, 472,647.09 and 214,087.38 is: 320,802.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,421.11 : 472,647.09 = 214,087.38 : x
  2. Step 2: Convert to fraction form
    315,421.11/472,647.09 = 214,087.38/x
  3. Step 3: Cross multiply
    315,421.11x = 472,647.09 × 214,087.38
  4. Step 4: Simplify right side
    315,421.11x = 101,187,776,193.13
  5. Step 5: Solve for x
    x = 101,187,776,193.13/315,421.11
  6. Step 6: Final answer
    x = 320,802.17

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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.