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Finding the Fourth Proportional to 518,677.16, 778,146.94 and 144,699.88

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Solution

The fourth proportional to 518,677.16, 778,146.94 and 144,699.88 is: 217,086.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,677.16 : 778,146.94 = 144,699.88 : x
  2. Step 2: Convert to fraction form
    518,677.16/778,146.94 = 144,699.88/x
  3. Step 3: Cross multiply
    518,677.16x = 778,146.94 × 144,699.88
  4. Step 4: Simplify right side
    518,677.16x = 112,597,768,840.37
  5. Step 5: Solve for x
    x = 112,597,768,840.37/518,677.16
  6. Step 6: Final answer
    x = 217,086.42

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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.