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Finding the Fourth Proportional to 146,489.40, 219,734.10 and 143,897.40

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Solution

The fourth proportional to 146,489.40, 219,734.10 and 143,897.40 is: 215,846.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,489.40 : 219,734.10 = 143,897.40 : x
  2. Step 2: Convert to fraction form
    146,489.40/219,734.10 = 143,897.40/x
  3. Step 3: Cross multiply
    146,489.40x = 219,734.10 × 143,897.40
  4. Step 4: Simplify right side
    146,489.40x = 31,619,165,681.34
  5. Step 5: Solve for x
    x = 31,619,165,681.34/146,489.40
  6. Step 6: Final answer
    x = 215,846.10

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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.