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Finding the Fourth Proportional to 518,446.20, 777,669.30 and 144,469.20

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Solution

The fourth proportional to 518,446.20, 777,669.30 and 144,469.20 is: 216,703.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,446.20 : 777,669.30 = 144,469.20 : x
  2. Step 2: Convert to fraction form
    518,446.20/777,669.30 = 144,469.20/x
  3. Step 3: Cross multiply
    518,446.20x = 777,669.30 × 144,469.20
  4. Step 4: Simplify right side
    518,446.20x = 112,349,261,635.56
  5. Step 5: Solve for x
    x = 112,349,261,635.56/518,446.20
  6. Step 6: Final answer
    x = 216,703.80

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1.5x scale

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.