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Finding the Fourth Proportional to 238,968, 358,474.32 and 70,488.48

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Solution

The fourth proportional to 238,968, 358,474.32 and 70,488.48 is: 105,739.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,968 : 358,474.32 = 70,488.48 : x
  2. Step 2: Convert to fraction form
    238,968/358,474.32 = 70,488.48/x
  3. Step 3: Cross multiply
    238,968x = 358,474.32 × 70,488.48
  4. Step 4: Simplify right side
    238,968x = 25,268,309,935.83
  5. Step 5: Solve for x
    x = 25,268,309,935.83/238,968
  6. Step 6: Final answer
    x = 105,739.30

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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.