Home / 318,870.48-478,333.25-82,211.16

Finding the Fourth Proportional to 318,870.48, 478,333.25 and 82,211.16

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Solution

The fourth proportional to 318,870.48, 478,333.25 and 82,211.16 is: 123,323.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,870.48 : 478,333.25 = 82,211.16 : x
  2. Step 2: Convert to fraction form
    318,870.48/478,333.25 = 82,211.16/x
  3. Step 3: Cross multiply
    318,870.48x = 478,333.25 × 82,211.16
  4. Step 4: Simplify right side
    318,870.48x = 39,324,331,349.07
  5. Step 5: Solve for x
    x = 39,324,331,349.07/318,870.48
  6. Step 6: Final answer
    x = 123,323.84

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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.