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Finding the Fourth Proportional to 342,893.20, 514,631.40 and 153,644.80

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Solution

The fourth proportional to 342,893.20, 514,631.40 and 153,644.80 is: 230,597.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,893.20 : 514,631.40 = 153,644.80 : x
  2. Step 2: Convert to fraction form
    342,893.20/514,631.40 = 153,644.80/x
  3. Step 3: Cross multiply
    342,893.20x = 514,631.40 × 153,644.80
  4. Step 4: Simplify right side
    342,893.20x = 79,070,438,526.72
  5. Step 5: Solve for x
    x = 79,070,438,526.72/342,893.20
  6. Step 6: Final answer
    x = 230,597.86

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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.