Home / 480,887.31-721,475.39-143,938.96

Finding the Fourth Proportional to 480,887.31, 721,475.39 and 143,938.96

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Solution

The fourth proportional to 480,887.31, 721,475.39 and 143,938.96 is: 215,951.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,887.31 : 721,475.39 = 143,938.96 : x
  2. Step 2: Convert to fraction form
    480,887.31/721,475.39 = 143,938.96/x
  3. Step 3: Cross multiply
    480,887.31x = 721,475.39 × 143,938.96
  4. Step 4: Simplify right side
    480,887.31x = 103,848,417,302.19
  5. Step 5: Solve for x
    x = 103,848,417,302.19/480,887.31
  6. Step 6: Final answer
    x = 215,951.67

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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.