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Finding the Fourth Proportional to 354,302.70, 531,486.45 and 143,897.10

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Solution

The fourth proportional to 354,302.70, 531,486.45 and 143,897.10 is: 215,858.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,302.70 : 531,486.45 = 143,897.10 : x
  2. Step 2: Convert to fraction form
    354,302.70/531,486.45 = 143,897.10/x
  3. Step 3: Cross multiply
    354,302.70x = 531,486.45 × 143,897.10
  4. Step 4: Simplify right side
    354,302.70x = 76,479,358,844.30
  5. Step 5: Solve for x
    x = 76,479,358,844.30/354,302.70
  6. Step 6: Final answer
    x = 215,858.81

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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.