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Finding the Fourth Proportional to 343,443.20, 514,924.80 and 203,129.60

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Solution

The fourth proportional to 343,443.20, 514,924.80 and 203,129.60 is: 304,552.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,443.20 : 514,924.80 = 203,129.60 : x
  2. Step 2: Convert to fraction form
    343,443.20/514,924.80 = 203,129.60/x
  3. Step 3: Cross multiply
    343,443.20x = 514,924.80 × 203,129.60
  4. Step 4: Simplify right side
    343,443.20x = 104,596,468,654.08
  5. Step 5: Solve for x
    x = 104,596,468,654.08/343,443.20
  6. Step 6: Final answer
    x = 304,552.45

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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.