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Finding the Fourth Proportional to 399,749.99, 599,559.31 and 143,529.52

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Solution

The fourth proportional to 399,749.99, 599,559.31 and 143,529.52 is: 215,270.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,749.99 : 599,559.31 = 143,529.52 : x
  2. Step 2: Convert to fraction form
    399,749.99/599,559.31 = 143,529.52/x
  3. Step 3: Cross multiply
    399,749.99x = 599,559.31 × 143,529.52
  4. Step 4: Simplify right side
    399,749.99x = 86,054,459,040.17
  5. Step 5: Solve for x
    x = 86,054,459,040.17/399,749.99
  6. Step 6: Final answer
    x = 215,270.70

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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.