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Finding the Fourth Proportional to 313,390.90, 470,273.09 and 113,726.86

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Solution

The fourth proportional to 313,390.90, 470,273.09 and 113,726.86 is: 170,658.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,390.90 : 470,273.09 = 113,726.86 : x
  2. Step 2: Convert to fraction form
    313,390.90/470,273.09 = 113,726.86/x
  3. Step 3: Cross multiply
    313,390.90x = 470,273.09 × 113,726.86
  4. Step 4: Simplify right side
    313,390.90x = 53,482,681,868.20
  5. Step 5: Solve for x
    x = 53,482,681,868.20/313,390.90
  6. Step 6: Final answer
    x = 170,658.06

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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.