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Finding the Fourth Proportional to 518,064.88, 777,141.05 and 144,087.88

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Solution

The fourth proportional to 518,064.88, 777,141.05 and 144,087.88 is: 216,143.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,064.88 : 777,141.05 = 144,087.88 : x
  2. Step 2: Convert to fraction form
    518,064.88/777,141.05 = 144,087.88/x
  3. Step 3: Cross multiply
    518,064.88x = 777,141.05 × 144,087.88
  4. Step 4: Simplify right side
    518,064.88x = 111,976,606,355.47
  5. Step 5: Solve for x
    x = 111,976,606,355.47/518,064.88
  6. Step 6: Final answer
    x = 216,143.98

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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.