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Finding the Fourth Proportional to 487,603.85, 731,223.88 and 167,665.21

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Solution

The fourth proportional to 487,603.85, 731,223.88 and 167,665.21 is: 251,435.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,603.85 : 731,223.88 = 167,665.21 : x
  2. Step 2: Convert to fraction form
    487,603.85/731,223.88 = 167,665.21/x
  3. Step 3: Cross multiply
    487,603.85x = 731,223.88 × 167,665.21
  4. Step 4: Simplify right side
    487,603.85x = 122,600,803,149.99
  5. Step 5: Solve for x
    x = 122,600,803,149.99/487,603.85
  6. Step 6: Final answer
    x = 251,435.27

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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.