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Finding the Fourth Proportional to 228,530.52, 342,818.46 and 78,750.72

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Solution

The fourth proportional to 228,530.52, 342,818.46 and 78,750.72 is: 118,133.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,530.52 : 342,818.46 = 78,750.72 : x
  2. Step 2: Convert to fraction form
    228,530.52/342,818.46 = 78,750.72/x
  3. Step 3: Cross multiply
    228,530.52x = 342,818.46 × 78,750.72
  4. Step 4: Simplify right side
    228,530.52x = 26,997,200,554.29
  5. Step 5: Solve for x
    x = 26,997,200,554.29/228,530.52
  6. Step 6: Final answer
    x = 118,133.90

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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.