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Finding the Fourth Proportional to 314,145.20, 470,440.20 and 251,937.20

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Solution

The fourth proportional to 314,145.20, 470,440.20 and 251,937.20 is: 377,282.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,145.20 : 470,440.20 = 251,937.20 : x
  2. Step 2: Convert to fraction form
    314,145.20/470,440.20 = 251,937.20/x
  3. Step 3: Cross multiply
    314,145.20x = 470,440.20 × 251,937.20
  4. Step 4: Simplify right side
    314,145.20x = 118,521,386,755.44
  5. Step 5: Solve for x
    x = 118,521,386,755.44/314,145.20
  6. Step 6: Final answer
    x = 377,282.18

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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.