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Finding the Fourth Proportional to 498,291.68, 747,480.72 and 143,334.56

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Solution

The fourth proportional to 498,291.68, 747,480.72 and 143,334.56 is: 215,014.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,291.68 : 747,480.72 = 143,334.56 : x
  2. Step 2: Convert to fraction form
    498,291.68/747,480.72 = 143,334.56/x
  3. Step 3: Cross multiply
    498,291.68x = 747,480.72 × 143,334.56
  4. Step 4: Simplify right side
    498,291.68x = 107,139,820,109.68
  5. Step 5: Solve for x
    x = 107,139,820,109.68/498,291.68
  6. Step 6: Final answer
    x = 215,014.27

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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.