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Finding the Fourth Proportional to 518,633.52, 777,881.16 and 144,694.32

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Solution

The fourth proportional to 518,633.52, 777,881.16 and 144,694.32 is: 217,022.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,633.52 : 777,881.16 = 144,694.32 : x
  2. Step 2: Convert to fraction form
    518,633.52/777,881.16 = 144,694.32/x
  3. Step 3: Cross multiply
    518,633.52x = 777,881.16 × 144,694.32
  4. Step 4: Simplify right side
    518,633.52x = 112,554,985,487.01
  5. Step 5: Solve for x
    x = 112,554,985,487.01/518,633.52
  6. Step 6: Final answer
    x = 217,022.20

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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.