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Finding the Fourth Proportional to 343,884.80, 515,827.20 and 265,152.80

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Solution

The fourth proportional to 343,884.80, 515,827.20 and 265,152.80 is: 397,729.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,884.80 : 515,827.20 = 265,152.80 : x
  2. Step 2: Convert to fraction form
    343,884.80/515,827.20 = 265,152.80/x
  3. Step 3: Cross multiply
    343,884.80x = 515,827.20 × 265,152.80
  4. Step 4: Simplify right side
    343,884.80x = 136,773,026,396.16
  5. Step 5: Solve for x
    x = 136,773,026,396.16/343,884.80
  6. Step 6: Final answer
    x = 397,729.20

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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.