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Finding the Fourth Proportional to 518,671.82, 777,980.18 and 158,842.56

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Solution

The fourth proportional to 518,671.82, 777,980.18 and 158,842.56 is: 238,255.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,671.82 : 777,980.18 = 158,842.56 : x
  2. Step 2: Convert to fraction form
    518,671.82/777,980.18 = 158,842.56/x
  3. Step 3: Cross multiply
    518,671.82x = 777,980.18 × 158,842.56
  4. Step 4: Simplify right side
    518,671.82x = 123,576,363,420.46
  5. Step 5: Solve for x
    x = 123,576,363,420.46/518,671.82
  6. Step 6: Final answer
    x = 238,255.40

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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.