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Finding the Fourth Proportional to 518,904.70, 778,284.15 and 163,954.60

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Solution

The fourth proportional to 518,904.70, 778,284.15 and 163,954.60 is: 245,908.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,904.70 : 778,284.15 = 163,954.60 : x
  2. Step 2: Convert to fraction form
    518,904.70/778,284.15 = 163,954.60/x
  3. Step 3: Cross multiply
    518,904.70x = 778,284.15 × 163,954.60
  4. Step 4: Simplify right side
    518,904.70x = 127,603,266,499.59
  5. Step 5: Solve for x
    x = 127,603,266,499.59/518,904.70
  6. Step 6: Final answer
    x = 245,908.87

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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.