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Finding the Fourth Proportional to 385,572.30, 531,368.55 and 277,958.94

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Solution

The fourth proportional to 385,572.30, 531,368.55 and 277,958.94 is: 383,063.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,572.30 : 531,368.55 = 277,958.94 : x
  2. Step 2: Convert to fraction form
    385,572.30/531,368.55 = 277,958.94/x
  3. Step 3: Cross multiply
    385,572.30x = 531,368.55 × 277,958.94
  4. Step 4: Simplify right side
    385,572.30x = 147,698,638,907.34
  5. Step 5: Solve for x
    x = 147,698,638,907.34/385,572.30
  6. Step 6: Final answer
    x = 383,063.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.