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Finding the Fourth Proportional to 258,223.74, 386,985.33 and 124,838.34

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Solution

The fourth proportional to 258,223.74, 386,985.33 and 124,838.34 is: 187,088.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,223.74 : 386,985.33 = 124,838.34 : x
  2. Step 2: Convert to fraction form
    258,223.74/386,985.33 = 124,838.34/x
  3. Step 3: Cross multiply
    258,223.74x = 386,985.33 × 124,838.34
  4. Step 4: Simplify right side
    258,223.74x = 48,310,606,201.55
  5. Step 5: Solve for x
    x = 48,310,606,201.55/258,223.74
  6. Step 6: Final answer
    x = 187,088.17

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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.