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Finding the Fourth Proportional to 643,599.62, 965,368.06 and 238,870.61

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Solution

The fourth proportional to 643,599.62, 965,368.06 and 238,870.61 is: 358,294.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,599.62 : 965,368.06 = 238,870.61 : x
  2. Step 2: Convert to fraction form
    643,599.62/965,368.06 = 238,870.61/x
  3. Step 3: Cross multiply
    643,599.62x = 965,368.06 × 238,870.61
  4. Step 4: Simplify right side
    643,599.62x = 230,598,051,942.70
  5. Step 5: Solve for x
    x = 230,598,051,942.70/643,599.62
  6. Step 6: Final answer
    x = 358,294.27

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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.