Home / 479,971.89-719,948.39-143,240.72

Finding the Fourth Proportional to 479,971.89, 719,948.39 and 143,240.72

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Solution

The fourth proportional to 479,971.89, 719,948.39 and 143,240.72 is: 214,858.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,971.89 : 719,948.39 = 143,240.72 : x
  2. Step 2: Convert to fraction form
    479,971.89/719,948.39 = 143,240.72/x
  3. Step 3: Cross multiply
    479,971.89x = 719,948.39 × 143,240.72
  4. Step 4: Simplify right side
    479,971.89x = 103,125,921,430.50
  5. Step 5: Solve for x
    x = 103,125,921,430.50/479,971.89
  6. Step 6: Final answer
    x = 214,858.25

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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.