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Finding the Fourth Proportional to 238,978.49, 358,433.13 and 70,490.49

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Solution

The fourth proportional to 238,978.49, 358,433.13 and 70,490.49 is: 105,725.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,978.49 : 358,433.13 = 70,490.49 : x
  2. Step 2: Convert to fraction form
    238,978.49/358,433.13 = 70,490.49/x
  3. Step 3: Cross multiply
    238,978.49x = 358,433.13 × 70,490.49
  4. Step 4: Simplify right side
    238,978.49x = 25,266,126,965.93
  5. Step 5: Solve for x
    x = 25,266,126,965.93/238,978.49
  6. Step 6: Final answer
    x = 105,725.53

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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.