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Finding the Fourth Proportional to 258,622.74, 356,876.28 and 143,897.58

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Solution

The fourth proportional to 258,622.74, 356,876.28 and 143,897.58 is: 198,565.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,622.74 : 356,876.28 = 143,897.58 : x
  2. Step 2: Convert to fraction form
    258,622.74/356,876.28 = 143,897.58/x
  3. Step 3: Cross multiply
    258,622.74x = 356,876.28 × 143,897.58
  4. Step 4: Simplify right side
    258,622.74x = 51,353,633,051.40
  5. Step 5: Solve for x
    x = 51,353,633,051.40/258,622.74
  6. Step 6: Final answer
    x = 198,565.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.