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Finding the Fourth Proportional to 388,817.78, 583,226.64 and 93,329.78

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Solution

The fourth proportional to 388,817.78, 583,226.64 and 93,329.78 is: 139,994.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,817.78 : 583,226.64 = 93,329.78 : x
  2. Step 2: Convert to fraction form
    388,817.78/583,226.64 = 93,329.78/x
  3. Step 3: Cross multiply
    388,817.78x = 583,226.64 × 93,329.78
  4. Step 4: Simplify right side
    388,817.78x = 54,432,414,001.34
  5. Step 5: Solve for x
    x = 54,432,414,001.34/388,817.78
  6. Step 6: Final answer
    x = 139,994.66

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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.