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Finding the Fourth Proportional to 143,301.65, 214,897.80 and 43,428.65

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Solution

The fourth proportional to 143,301.65, 214,897.80 and 43,428.65 is: 65,126.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,301.65 : 214,897.80 = 43,428.65 : x
  2. Step 2: Convert to fraction form
    143,301.65/214,897.80 = 43,428.65/x
  3. Step 3: Cross multiply
    143,301.65x = 214,897.80 × 43,428.65
  4. Step 4: Simplify right side
    143,301.65x = 9,332,721,341.97
  5. Step 5: Solve for x
    x = 9,332,721,341.97/143,301.65
  6. Step 6: Final answer
    x = 65,126.41

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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.