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Finding the Fourth Proportional to 201,988.40, 302,723.40 and 155,008.40

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Solution

The fourth proportional to 201,988.40, 302,723.40 and 155,008.40 is: 232,313.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,988.40 : 302,723.40 = 155,008.40 : x
  2. Step 2: Convert to fraction form
    201,988.40/302,723.40 = 155,008.40/x
  3. Step 3: Cross multiply
    201,988.40x = 302,723.40 × 155,008.40
  4. Step 4: Simplify right side
    201,988.40x = 46,924,669,876.56
  5. Step 5: Solve for x
    x = 46,924,669,876.56/201,988.40
  6. Step 6: Final answer
    x = 232,313.69

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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.