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Finding the Fourth Proportional to 143,630, 215,448.84 and 48,860

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Solution

The fourth proportional to 143,630, 215,448.84 and 48,860 is: 73,291.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,630 : 215,448.84 = 48,860 : x
  2. Step 2: Convert to fraction form
    143,630/215,448.84 = 48,860/x
  3. Step 3: Cross multiply
    143,630x = 215,448.84 × 48,860
  4. Step 4: Simplify right side
    143,630x = 10,526,830,322.40
  5. Step 5: Solve for x
    x = 10,526,830,322.40/143,630
  6. Step 6: Final answer
    x = 73,291.31

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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.