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Finding the Fourth Proportional to 228,479.90, 342,454.89 and 135,064.22

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Solution

The fourth proportional to 228,479.90, 342,454.89 and 135,064.22 is: 202,439.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,479.90 : 342,454.89 = 135,064.22 : x
  2. Step 2: Convert to fraction form
    228,479.90/342,454.89 = 135,064.22/x
  3. Step 3: Cross multiply
    228,479.90x = 342,454.89 × 135,064.22
  4. Step 4: Simplify right side
    228,479.90x = 46,253,402,603.04
  5. Step 5: Solve for x
    x = 46,253,402,603.04/228,479.90
  6. Step 6: Final answer
    x = 202,439.70

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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.