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Finding the Fourth Proportional to 238,988.56, 358,359.31 and 70,487.39

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Solution

The fourth proportional to 238,988.56, 358,359.31 and 70,487.39 is: 105,694.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,988.56 : 358,359.31 = 70,487.39 : x
  2. Step 2: Convert to fraction form
    238,988.56/358,359.31 = 70,487.39/x
  3. Step 3: Cross multiply
    238,988.56x = 358,359.31 × 70,487.39
  4. Step 4: Simplify right side
    238,988.56x = 25,259,811,548.20
  5. Step 5: Solve for x
    x = 25,259,811,548.20/238,988.56
  6. Step 6: Final answer
    x = 105,694.65

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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.