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Finding the Fourth Proportional to 200,835.40, 301,080.30 and 102,339.40

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Solution

The fourth proportional to 200,835.40, 301,080.30 and 102,339.40 is: 153,421.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,835.40 : 301,080.30 = 102,339.40 : x
  2. Step 2: Convert to fraction form
    200,835.40/301,080.30 = 102,339.40/x
  3. Step 3: Cross multiply
    200,835.40x = 301,080.30 × 102,339.40
  4. Step 4: Simplify right side
    200,835.40x = 30,812,377,253.82
  5. Step 5: Solve for x
    x = 30,812,377,253.82/200,835.40
  6. Step 6: Final answer
    x = 153,421.05

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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.