Home / 319,290.46-478,972.75-106,077.40

Finding the Fourth Proportional to 319,290.46, 478,972.75 and 106,077.40

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Solution

The fourth proportional to 319,290.46, 478,972.75 and 106,077.40 is: 159,128.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,290.46 : 478,972.75 = 106,077.40 : x
  2. Step 2: Convert to fraction form
    319,290.46/478,972.75 = 106,077.40/x
  3. Step 3: Cross multiply
    319,290.46x = 478,972.75 × 106,077.40
  4. Step 4: Simplify right side
    319,290.46x = 50,808,183,990.85
  5. Step 5: Solve for x
    x = 50,808,183,990.85/319,290.46
  6. Step 6: Final answer
    x = 159,128.41

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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.