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Finding the Fourth Proportional to 518,457.46, 777,612.20 and 163,425.28

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Solution

The fourth proportional to 518,457.46, 777,612.20 and 163,425.28 is: 245,114.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,457.46 : 777,612.20 = 163,425.28 : x
  2. Step 2: Convert to fraction form
    518,457.46/777,612.20 = 163,425.28/x
  3. Step 3: Cross multiply
    518,457.46x = 777,612.20 × 163,425.28
  4. Step 4: Simplify right side
    518,457.46x = 127,081,491,516.42
  5. Step 5: Solve for x
    x = 127,081,491,516.42/518,457.46
  6. Step 6: Final answer
    x = 245,114.60

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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.