Home / 314,878.24-472,315.68-78,220.96

Finding the Fourth Proportional to 314,878.24, 472,315.68 and 78,220.96

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Solution

The fourth proportional to 314,878.24, 472,315.68 and 78,220.96 is: 117,331.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,878.24 : 472,315.68 = 78,220.96 : x
  2. Step 2: Convert to fraction form
    314,878.24/472,315.68 = 78,220.96/x
  3. Step 3: Cross multiply
    314,878.24x = 472,315.68 × 78,220.96
  4. Step 4: Simplify right side
    314,878.24x = 36,944,985,912.65
  5. Step 5: Solve for x
    x = 36,944,985,912.65/314,878.24
  6. Step 6: Final answer
    x = 117,331.02

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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.